Shortest problems on Codeforces

List of Codeforces problems with a short problem statement of 1000 characters or less. Sorted for each rating level.

Background

Inspired by this blog with lists of short problems but missing some from my bracket, I set out to compile a more complete list and also a SQL database to cater for customized queries. As a start, I have made a general list for all 1000+ problems with a statement of 1000 characters or less, ordered by statement length and rating.

I plan to add at least one more list filtered by tags and ratings but I have no idea how to best organize the duplicates, as the shortest problems with multiple tags will show up in many lists. Any suggestion is welcome.

If there is any additional list you'd like to see, please let me know. For those feeling adventurous, a quick-and-dirty Python script as well as SQL data dump can be found within the repository, add battery to a MariaDB server and you are good to go.

Lists

Title	Links
Newbie	800(111) 900(44) 1000(63) 1100(50)
Pupil	1200(60) 1300(50)
Specialist	1400(57) 1500(46)
Export	1600(76) 1700(51) 1800(56)
Candidate Master	1900(66) 2000(50)
Master	2100(41) 2200(45)
International Master	2300(44)
Grandmaster	2400(48) 2500(36)
International Grandmaster	2600(23) 2700(15) 2800(15) 2900(16)
Legendary Grandmaster	3000(11) 3100(18) 3200(6) 3300(3) 3400(2) 3500(4)

800

#	ID	Problem	Rating
1	952A	Quirky Quantifiers	800
2	1351A	A+B (Trial Problem)	800
3	281A	Word Capitalization	800
4	1088A	Ehab and another construction problem	800
5	1096A	Find Divisible	800
6	1028A	Find Square	800
7	266A	Stones on the Table	800
8	1389A	LCM Problem	800
9	678A	Johny Likes Numbers	800
10	1493A	Anti-knapsack	800
11	1047A	Little C Loves 3 I	800
12	1520B	Ordinary Numbers	800
13	271A	Beautiful Year	800
14	22A	Second Order Statistics	800
15	1512A	Spy Detected!	800
16	702A	Maximum Increase	800
17	1328A	Divisibility Problem	800
18	32B	Borze	800
19	16A	Flag	800
20	443A	Anton and Letters	800
21	1385A	Three Pairwise Maximums	800
22	440A	Forgotten Episode	800
23	1283A	Minutes Before the New Year	800
24	1003A	Polycarp's Pockets	800
25	1269A	Equation	800
26	1517A	Sum of 2050	800
27	1228A	Distinct Digits	800
28	900A	Find Extra One	800
29	1183A	Nearest Interesting Number	800
30	520A	Pangram	800
31	1514A	Perfectly Imperfect Array	800
32	546A	Soldier and Bananas	800
33	630A	Again Twenty Five!	800
34	34A	Reconnaissance 2	800
35	1411A	In-game Chat	800
36	1296A	Array with Odd Sum	800
37	486A	Calculating Function	800
38	1154A	Restoring Three Numbers	800
39	50A	Domino piling	800
40	749A	Bachgold Problem	800
41	41A	Translation	800
42	1005A	Tanya and Stairways	800
43	710A	King Moves	800
44	339A	Helpful Maths	800
45	384A	Coder	800
46	47A	Triangular numbers	800
47	1220A	Cards	800
48	1325A	EhAb AnD gCd	800
49	1030A	In Search of an Easy Problem	800
50	386A	Second-Price Auction	800
51	837A	Text Volume	800
52	454A	Little Pony and Crystal Mine	800
53	802G	Fake News (easy)	800
54	1230A	Dawid and Bags of Candies	800
55	615A	Bulbs	800
56	1421A	XORwice	800
57	421A	Pasha and Hamsters	800
58	1118A	Water Buying	800
59	1194A	Remove a Progression	800
60	158A	Next Round	800
61	1065A	Vasya and Chocolate	800
62	1176A	Divide it!	800
63	965A	Paper Airplanes	800
64	426A	Sereja and Mugs	800
65	228A	Is your horseshoe on the other hoof?	800
66	14A	Letter	800
67	1436A	Reorder	800
68	32A	Reconnaissance	800
69	1370A	Maximum GCD	800
70	181A	Series of Crimes	800
71	411A	Password Check	800
72	469A	I Wanna Be the Guy	800
73	467A	George and Accommodation	800
74	1512B	Almost Rectangle	800
75	1527A	And Then There Were K	800
76	831B	Keyboard Layouts	800
77	996A	Hit the Lottery	800
78	977A	Wrong Subtraction	800
79	705A	Hulk	800
80	884A	Book Reading	800
81	988A	Diverse Team	800
82	978A	Remove Duplicates	800
83	1343B	Balanced Array	800
84	1325B	CopyCopyCopyCopyCopy	800
85	1513A	Array and Peaks	800
86	1445A	Array Rearrangment	800
87	1323A	Even Subset Sum Problem	800
88	1454A	Special Permutation	800
89	1061A	Coins	800
90	112A	Petya and Strings	800
91	984A	Game	800
92	1398A	Bad Triangle	800
93	1352A	Sum of Round Numbers	800
94	1422A	Fence	800
95	1102A	Integer Sequence Dividing	800
96	49A	Sleuth	800
97	214A	System of Equations	800
98	734A	Anton and Danik	800
99	59A	Word	800
100	701A	Cards	800
101	1056A	Determine Line	800
102	492A	Vanya and Cubes	800
103	1374A	Required Remainder	800
104	1207A	There Are Two Types Of Burgers	800
105	1472B	Fair Division	800
106	472A	Design Tutorial: Learn from Math	800
107	1454B	Unique Bid Auction	800
108	1526A	Mean Inequality	800
109	581A	Vasya the Hipster	800
110	38A	Army	800
111	1080A	Petya and Origami	800

900

#	ID	Problem	Rating
1	1462C	Unique Number	900
2	26A	Almost Prime	900
3	44A	Indian Summer	900
4	1351B	Square?	900
5	130A	Hexagonal numbers	900
6	1475A	Odd Divisor	900
7	1380A	Three Indices	900
8	1057A	Bmail Computer Network	900
9	52A	123-sequence	900
10	267A	Subtractions	900
11	622B	The Time	900
12	320A	Magic Numbers	900
13	1225A	Forgetting Things	900
14	474A	Keyboard	900
15	34B	Sale	900
16	275A	Lights Out	900
17	1505A	Is it rated - 2	900
18	424A	Squats	900
19	96A	Football	900
20	1535B	Array Reodering	900
21	621A	Wet Shark and Odd and Even	900
22	670A	Holidays	900
23	1110A	Parity	900
24	808A	Lucky Year	900
25	1436B	Prime Square	900
26	863A	Quasi-palindrome	900
27	914A	Perfect Squares	900
28	1047B	Cover Points	900
29	1208A	XORinacci	900
30	892A	Greed	900
31	299B	Ksusha the Squirrel	900
32	16B	Burglar and Matches	900
33	11A	Increasing Sequence	900
34	1175A	From Hero to Zero	900
35	263B	Squares	900
36	1475B	New Year's Number	900
37	598A	Tricky Sum	900
38	6A	Triangle	900
39	847G	University Classes	900
40	980A	Links and Pearls	900
41	1496A	Split it!	900
42	870A	Search for Pretty Integers	900
43	1095B	Array Stabilization	900
44	318A	Even Odds	900

1000

#	ID	Problem	Rating
1	37A	Towers	1000
2	1177A	Digits Sequence (Easy Edition)	1000
3	753A	Santa Claus and Candies	1000
4	1256A	Payment Without Change	1000
5	691A	Fashion in Berland	1000
6	299A	Ksusha and Array	1000
7	560A	Currency System in Geraldion	1000
8	1101A	Minimum Integer	1000
9	1174A	Ehab Fails to Be Thanos	1000
10	462A	Appleman and Easy Task	1000
11	1051B	Relatively Prime Pairs	1000
12	43A	Football	1000
13	35A	Shell Game	1000
14	584A	Olesya and Rodion	1000
15	124A	The number of positions	1000
16	29A	Spit Problem	1000
17	1A	Theatre Square	1000
18	1312B	Bogosort	1000
19	1230B	Ania and Minimizing	1000
20	1133A	Middle of the Contest	1000
21	1090M	The Pleasant Walk	1000
22	1520C	Not Adjacent Matrix	1000
23	1211A	Three Problems	1000
24	798A	Mike and palindrome	1000
25	1182A	Filling Shapes	1000
26	118A	String Task	1000
27	109A	Lucky Sum of Digits	1000
28	13A	Numbers	1000
29	72G	Fibonacci army	1000
30	352A	Jeff and Digits	1000
31	1107B	Digital root	1000
32	476A	Dreamoon and Stairs	1000
33	219A	k-String	1000
34	58A	Chat room	1000
35	1411B	Fair Numbers	1000
36	887A	Div. 64	1000
37	108A	Palindromic Times	1000
38	1405B	Array Cancellation	1000
39	1199B	Water Lily	1000
40	622A	Infinite Sequence	1000
41	3A	Shortest path of the king	1000
42	1485A	Add and Divide	1000
43	535A	Tavas and Nafas	1000
44	1257B	Magic Stick	1000
45	118B	Present from Lena	1000
46	859B	Lazy Security Guard	1000
47	131A	cAPS lOCK	1000
48	379A	New Year Candles	1000
49	1418A	Buying Torches	1000
50	1088B	Ehab and subtraction	1000
51	1476A	K-divisible Sum	1000
52	322A	Ciel and Dancing	1000
53	1165B	Polycarp Training	1000
54	420A	Start Up	1000
55	1008B	Turn the Rectangles	1000
56	577A	Multiplication Table	1000
57	452A	Eevee	1000
58	69A	Young Physicist	1000
59	334A	Candy Bags	1000
60	102B	Sum of Digits	1000
61	507A	Amr and Music	1000
62	1346A	Color Revolution	1000
63	120A	Elevator	1000

1100

#	ID	Problem	Rating
1	797A	k-Factorization	1100
2	188D	Asterisks	1100
3	188A	Hexagonal Numbers	1100
4	919B	Perfect Number	1100
5	162A	Pentagonal numbers	1100
6	911A	Nearest Minimums	1100
7	630C	Lucky Numbers	1100
8	382A	Ksenia and Pan Scales	1100
9	224A	Parallelepiped	1100
10	25B	Phone numbers	1100
11	501B	Misha and Changing Handles	1100
12	312A	Whose sentence is it?	1100
13	43B	Letter	1100
14	1117A	Best Subsegment	1100
15	349A	Cinema Line	1100
16	365A	Good Number	1100
17	100A	Carpeting the Room	1100
18	456A	Laptops	1100
19	1478B	Nezzar and Lucky Number	1100
20	12B	Correct Solution?	1100
21	39D	Cubical Planet	1100
22	534A	Exam	1100
23	1213B	Bad Prices	1100
24	300A	Array	1100
25	825A	Binary Protocol	1100
26	1366A	Shovels and Swords	1100
27	53A	Autocomplete	1100
28	1288B	Yet Another Meme Problem	1100
29	296A	Yaroslav and Permutations	1100
30	630J	Divisibility	1100
31	1001A	Generate plus state or minus state	1100
32	841B	Godsend	1100
33	835B	The number on the board	1100
34	755B	PolandBall and Game	1100
35	1060B	Maximum Sum of Digits	1100
36	433A	Kitahara Haruki's Gift	1100
37	82A	Double Cola	1100
38	877A	Alex and broken contest	1100
39	12C	Fruits	1100
40	362B	Petya and Staircases	1100
41	1327A	Sum of Odd Integers	1100
42	858A	k-rounding	1100
43	270A	Fancy Fence	1100
44	186A	Comparing Strings	1100
45	1511B	GCD Length	1100
46	475A	Bayan Bus	1100
47	596A	Wilbur and Swimming Pool	1100
48	1115G1	AND oracle	1100
49	6B	President's Office	1100
50	1490C	Sum of Cubes	1100

1200

#	ID	Problem	Rating
1	171A	Mysterious numbers - 1	1200
2	1520D	Same Differences	1200
3	23A	You're Given a String...	1200
4	1315C	Restoring Permutation	1200
5	5B	Center Alignment	1200
6	1352C	K-th Not Divisible by n	1200
7	803B	Distances to Zero	1200
8	1001H	Oracle for f(x) = parity of the number of 1s in x	1200
9	38B	Chess	1200
10	47B	Coins	1200
11	18C	Stripe	1200
12	134A	Average Numbers	1200
13	55A	Flea travel	1200
14	489A	SwapSort	1200
15	1352B	Same Parity Summands	1200
16	459A	Pashmak and Garden	1200
17	1213C	Book Reading	1200
18	754A	Lesha and array splitting	1200
19	1028B	Unnatural Conditions	1200
20	27A	Next Test	1200
21	217A	Ice Skating	1200
22	1497C1	k-LCM (easy version)	1200
23	683A	The Check of the Point	1200
24	254A	Cards with Numbers	1200
25	31A	Worms Evolution	1200
26	660A	Co-prime Array	1200
27	1076B	Divisor Subtraction	1200
28	53C	Little Frog	1200
29	1143B	Nirvana	1200
30	630B	Moore's Law	1200
31	6C	Alice, Bob and Chocolate	1200
32	489B	BerSU Ball	1200
33	1363A	Odd Selection	1200
34	1203B	Equal Rectangles	1200
35	1514B	AND 0, Sum Big	1200
36	239A	Two Bags of Potatoes	1200
37	1406B	Maximum Product	1200
38	552B	Vanya and Books	1200
39	466A	Cheap Travel	1200
40	749B	Parallelogram is Back	1200
41	1068B	LCM	1200
42	9C	Hexadecimal's Numbers	1200
43	1174B	Ehab Is an Odd Person	1200
44	802M	April Fools' Problem (easy)	1200
45	1104B	Game with string	1200
46	982A	Row	1200
47	630R	Game	1200
48	59B	Fortune Telling	1200
49	78B	Easter Eggs	1200
50	1364A	XXXXX	1200
51	999C	Alphabetic Removals	1200
52	842A	Kirill And The Game	1200
53	1512D	Corrupted Array	1200
54	523A	Rotate, Flip and Zoom	1200
55	454B	Little Pony and Sort by Shift	1200
56	765C	Table Tennis Game 2	1200
57	892B	Wrath	1200
58	554B	Ohana Cleans Up	1200
59	1433D	Districts Connection	1200
60	977C	Less or Equal	1200

1300

#	ID	Problem	Rating
1	171B	Star	1300
2	64A	Factorial	1300
3	1294C	Product of Three Numbers	1300
4	770B	Maximize Sum of Digits	1300
5	188B	A + Reverse B	1300
6	1076C	Meme Problem	1300
7	171D	Broken checker	1300
8	25A	IQ test	1300
9	661A	Lazy Caterer Sequence	1300
10	600B	Queries about less or equal elements	1300
11	630F	Selection of Personnel	1300
12	1220B	Multiplication Table	1300
13	1203C	Common Divisors	1300
14	876B	Divisiblity of Differences	1300
15	221B	Little Elephant and Numbers	1300
16	39H	Multiplication Table	1300
17	1029A	Many Equal Substrings	1300
18	493A	Vasya and Football	1300
19	58B	Coins	1300
20	1001F	Distinguish multi-qubit basis states	1300
21	147A	Punctuation	1300
22	844B	Rectangles	1300
23	630N	Forecast	1300
24	312B	Archer	1300
25	181B	Number of Triplets	1300
26	665C	Simple Strings	1300
27	36A	Extra-terrestrial Intelligence	1300
28	57A	Square Earth?	1300
29	1157B	Long Number	1300
30	1030C	Vasya and Golden Ticket	1300
31	1454D	Number into Sequence	1300
32	485B	Valuable Resources	1300
33	189A	Cut Ribbon	1300
34	1373C	Pluses and Minuses	1300
35	1165C	Good String	1300
36	1424G	Years	1300
37	251A	Points on Line	1300
38	1174C	Ehab and a Special Coloring Problem	1300
39	230B	T-primes	1300
40	94B	Friends	1300
41	135A	Replacement	1300
42	887B	Cubes for Masha	1300
43	1260B	Obtain Two Zeroes	1300
44	276B	Little Girl and Game	1300
45	1422B	Nice Matrix	1300
46	573A	Bear and Poker	1300
47	1016B	Segment Occurrences	1300
48	965B	Battleship	1300
49	203B	Game on Paper	1300
50	40A	Find Color	1300

1400

#	ID	Problem	Rating
1	1505C	Fibonacci Words	1400
2	290A	Mysterious strings	1400
3	130B	Gnikool Ssalg	1400
4	290D	Orange	1400
5	188C	LCM	1400
6	710B	Optimal Point on a Line	1400
7	188F	Binary Notation	1400
8	538B	Quasi Binary	1400
9	100C	A+B	1400
10	435B	Pasha Maximizes	1400
11	489C	Given Length and Sum of Digits...	1400
12	1001G	Oracle for f(x) = k-th element of x	1400
13	44E	Anfisa the Monkey	1400
14	1526B	I Hate 1111	1400
15	1215B	The Number of Products	1400
16	1324D	Pair of Topics	1400
17	470A	Crystal Ball Sequence	1400
18	1285C	Fadi and LCM	1400
19	1095C	Powers Of Two	1400
20	1380C	Create The Teams	1400
21	125A	Measuring Lengths in Baden	1400
22	888C	K-Dominant Character	1400
23	1355D	Game With Array	1400
24	131C	The World is a Theatre	1400
25	124B	Permutations	1400
26	1463B	Find The Array	1400
27	630H	Benches	1400
28	1046C	Space Formula	1400
29	803A	Maximal Binary Matrix	1400
30	41B	Martian Dollar	1400
31	1057B	DDoS	1400
32	683D	Chocolate Bar	1400
33	1167C	News Distribution	1400
34	1351C	Skier	1400
35	248B	Chilly Willy	1400
36	26B	Regular Bracket Sequence	1400
37	1354C1	Simple Polygon Embedding	1400
38	289B	Polo the Penguin and Matrix	1400
39	699B	One Bomb	1400
40	111A	Petya and Inequiations	1400
41	379C	New Year Ratings Change	1400
42	797B	Odd sum	1400
43	1506D	Epic Transformation	1400
44	315A	Sereja and Bottles	1400
45	1131B	Draw!	1400
46	45I	TCMCF+++	1400
47	260A	Adding Digits	1400
48	24A	Ring road	1400
49	219B	Special Offer! Super Price 999 Bourles!	1400
50	520B	Two Buttons	1400
51	245E	Mishap in Club	1400
52	180C	Letter	1400
53	544B	Sea and Islands	1400
54	1494B	Berland Crossword	1400
55	762A	k-th divisor	1400
56	1001D	Distinguish plus state and minus state	1400
57	513B1	Permutations	1400

1500

#	ID	Problem	Rating
1	130C	Decimal sum	1500
2	670D2	Magic Powder - 2	1500
3	290B	QR code	1500
4	409H	A + B Strikes Back	1500
5	710C	Magic Odd Square	1500
6	130D	Exponentiation	1500
7	100I	Rotation	1500
8	1409D	Decrease the Sum of Digits	1500
9	530A	Quadratic equation	1500
10	100B	Friendly Numbers	1500
11	64B	Expression	1500
12	530C	Diophantine equation	1500
13	550C	Divisibility by Eight	1500
14	982C	Cut 'em all!	1500
15	50B	Choosing Symbol Pairs	1500
16	1416A	k-Amazing Numbers	1500
17	325A	Square and Rectangles	1500
18	1201B	Zero Array	1500
19	1051C	Vasya and Multisets	1500
20	748B	Santa Claus and Keyboard Check	1500
21	276C	Little Girl and Maximum Sum	1500
22	1169B	Pairs	1500
23	22B	Bargaining Table	1500
24	1133D	Zero Quantity Maximization	1500
25	468A	24 Game	1500
26	746D	Green and Black Tea	1500
27	845C	Two TVs	1500
28	1141C	Polycarp Restores Permutation	1500
29	630K	Indivisibility	1500
30	39J	Spelling Check	1500
31	1325C	Ehab and Path-etic MEXs	1500
32	274A	k-Multiple Free Set	1500
33	1213D1	Equalizing by Division (easy version)	1500
34	18A	Triangle	1500
35	868C	Qualification Rounds	1500
36	1105C	Ayoub and Lost Array	1500
37	1272D	Remove One Element	1500
38	328B	Sheldon and Ice Pieces	1500
39	991D	Bishwock	1500
40	1490F	Equalize the Array	1500
41	1516B	AGAGA XOOORRR	1500
42	1101C	Division and Union	1500
43	550A	Two Substrings	1500
44	31B	Sysadmin Bob	1500
45	425A	Sereja and Swaps	1500
46	114B	PFAST Inc.	1500

1600

#	ID	Problem	Rating
1	171G	Mysterious numbers - 2	1600
2	171F	ucyhf	1600
3	683C	Symmetric Difference	1600
4	188G	Array Sorting	1600
5	1458A	Row GCD	1600
6	1505B	DMCA	1600
7	683B	The Teacher of Physical Education	1600
8	153A	A + B	1600
9	219C	Color Stripe	1600
10	597A	Divisibility	1600
11	407A	Triangle	1600
12	23B	Party	1600
13	375A	Divisible by Seven	1600
14	11B	Jumping Jack	1600
15	530D	Set subtraction	1600
16	440B	Balancer	1600
17	52B	Right Triangles	1600
18	1396A	Multiples of Length	1600
19	1342C	Yet Another Counting Problem	1600
20	1165E	Two Arrays and Sum of Functions	1600
21	1165D	Almost All Divisors	1600
22	1364C	Ehab and Prefix MEXs	1600
23	323A	Black-and-White Cube	1600
24	1511D	Min Cost String	1600
25	825B	Five-In-a-Row	1600
26	372A	Counting Kangaroos is Fun	1600
27	377A	Maze	1600
28	660C	Hard Process	1600
29	1497C2	k-LCM (hard version)	1600
30	130H	Balanced brackets	1600
31	1175C	Electrification	1600
32	130E	Tribonacci numbers	1600
33	1352G	Special Permutation	1600
34	1514C	Product 1 Modulo N	1600
35	232A	Cycles	1600
36	64C	Table	1600
37	1003D	Coins and Queries	1600
38	1482C	Basic Diplomacy	1600
39	493C	Vasya and Basketball	1600
40	40B	Repaintings	1600
41	1373D	Maximum Sum on Even Positions	1600
42	1213D2	Equalizing by Division (hard version)	1600
43	1184C1	Heidi and the Turing Test (Easy)	1600
44	605A	Sorting Railway Cars	1600
45	888D	Almost Identity Permutations	1600
46	373B	Making Sequences is Fun	1600
47	322B	Ciel and Flowers	1600
48	597B	Restaurant	1600
49	980B	Marlin	1600
50	958E1	Guard Duty (easy)	1600
51	55B	Smallest number	1600
52	305A	Strange Addition	1600
53	1288C	Two Arrays	1600
54	125C	Hobbits' Party	1600
55	691B	s-palindrome	1600
56	1519D	Maximum Sum of Products	1600
57	348A	Mafia	1600
58	845B	Luba And The Ticket	1600
59	1363C	Game On Leaves	1600
60	28A	Bender Problem	1600
61	1234D	Distinct Characters Queries	1600
62	1B	Spreadsheet	1600
63	1398C	Good Subarrays	1600
64	678B	The Same Calendar	1600
65	1015D	Walking Between Houses	1600
66	214B	Hometask	1600
67	1098A	Sum in the tree	1600
68	1334C	Circle of Monsters	1600
69	1295C	Obtain The String	1600
70	1115G2	OR oracle	1600
71	1395C	Boboniu and Bit Operations	1600
72	1513C	Add One	1600
73	1140C	Playlist	1600
74	235A	LCM Challenge	1600
75	616D	Longest k-Good Segment	1600
76	1423K	Lonely Numbers	1600

1700

#	ID	Problem	Rating
1	784A	Numbers Joke	1700
2	76E	Points	1700
3	171H	A polyline	1700
4	130G	CAPS LOCK ON	1700
5	409A	The Great Game	1700
6	1512G	Short Task	1700
7	530E	Sum and product	1700
8	409B	Mysterious Language	1700
9	409C	Magnum Opus	1700
10	632C	The Smallest String Concatenation	1700
11	1325D	Ehab the Xorcist	1700
12	915C	Permute Digits	1700
13	1268A	Long Beautiful Integer	1700
14	14C	Four Segments	1700
15	1132C	Painting the Fence	1700
16	290C	WTF?	1700
17	983A	Finite or not?	1700
18	349B	Color the Fence	1700
19	919D	Substring	1700
20	581D	Three Logos	1700
21	466C	Number of Ways	1700
22	31C	Schedule	1700
23	926I	A Vital Problem	1700
24	439C	Devu and Partitioning of the Array	1700
25	1485C	Floor and Mod	1700
26	18B	Platforms	1700
27	1329B	Dreamoon Likes Sequences	1700
28	627A	XOR Equation	1700
29	53B	Blog Photo	1700
30	1217C	The Number Of Good Substrings	1700
31	678D	Iterated Linear Function	1700
32	22C	System Administrator	1700
33	1157E	Minimum Array	1700
34	1144F	Graph Without Long Directed Paths	1700
35	656B	Scrambled	1700
36	20A	BerOS file system	1700
37	1343D	Constant Palindrome Sum	1700
38	216B	Forming Teams	1700
39	1468F	Full Turn	1700
40	598D	Igor In the Museum	1700
41	140A	New Year Table	1700
42	1102E	Monotonic Renumeration	1700
43	1497E1	Square-free division (easy version)	1700
44	1312D	Count the Arrays	1700
45	275B	Convex Shape	1700
46	622C	Not Equal on a Segment	1700
47	1141E	Superhero Battle	1700
48	900C	Remove Extra One	1700
49	490C	Hacking Cypher	1700
50	578A	A Problem about Polyline	1700
51	1219C	Periodic integer number	1700

1800

#	ID	Problem	Rating
1	1505D	Xenolith? Hippodrome?	1800
2	409E	Dome	1800
3	802B	Heidi and Library (medium)	1800
4	652D	Nested Segments	1800
5	162H	Alternating case	1800
6	952D	I'm Feeling Lucky!	1800
7	162B	Binary notation	1800
8	153B	Binary notation	1800
9	1177B	Digits Sequence (Hard Edition)	1800
10	440C	One-Based Arithmetic	1800
11	7C	Line	1800
12	470B	Hexakosioihexekontahexaphobia	1800
13	1295D	Same GCDs	1800
14	64D	Presents	1800
15	663A	Rebus	1800
16	162F	Factorial zeros	1800
17	1267L	Lexicography	1800
18	612D	The Union of k-Segments	1800
19	1225D	Power Products	1800
20	64E	Prime Segment	1800
21	69E	Subsegments	1800
22	1076D	Edge Deletion	1800
23	683E	Hammer throwing	1800
24	162J	Brackets	1800
25	1249D1	Too Many Segments (easy version)	1800
26	1249D2	Too Many Segments (hard version)	1800
27	16C	Monitor	1800
28	45J	Planting Trees	1800
29	67A	Partial Teacher	1800
30	100G	Name the album	1800
31	784C	INTERCALC	1800
32	926B	Add Points	1800
33	1152C	Neko does Maths	1800
34	1505E	Cakewalk	1800
35	1213G	Path Queries	1800
36	1466E	Apollo versus Pan	1800
37	846F	Random Query	1800
38	130J	Date calculation	1800
39	883H	Palindromic Cut	1800
40	1286B	Numbers on Tree	1800
41	691C	Exponential notation	1800
42	1327E	Count The Blocks	1800
43	1329A	Dreamoon Likes Coloring	1800
44	301A	Yaroslav and Sequence	1800
45	49D	Game	1800
46	1208C	Magic Grid	1800
47	1030D	Vasya and Triangle	1800
48	1491D	Zookeeper and The Infinite Zoo	1800
49	1462F	The Treasure of The Segments	1800
50	161D	Distance in Tree	1800
51	452B	4-point polyline	1800
52	404C	Restore Graph	1800
53	1442A	Extreme Subtraction	1800
54	1042D	Petya and Array	1800
55	513B2	Permutations	1800
56	33B	String Problem	1800

1900

#	ID	Problem	Rating
1	656A	Da Vinci Powers	1900
2	656F	Ace It!	1900
3	784D	Touchy-Feely Palindromes	1900
4	409F	000001	1900
5	162D	Remove digits	1900
6	660D	Number of Parallelograms	1900
7	20C	Dijkstra?	1900
8	661F	Primes in Interval	1900
9	597C	Subsequences	1900
10	661B	Seasons	1900
11	470E	Chessboard	1900
12	22D	Segments	1900
13	683G	The Fraction	1900
14	784F	Crunching Numbers Just for You	1900
15	27C	Unordered Subsequence	1900
16	1272E	Nearest Opposite Parity	1900
17	656G	You're a Professional	1900
18	1036C	Classy Numbers	1900
19	1303D	Fill The Bag	1900
20	45D	Event Dates	1900
21	1400D	Zigzags	1900
22	540D	Bad Luck Island	1900
23	1089F	Fractions	1900
24	470C	Eval	1900
25	335B	Palindrome	1900
26	1205B	Shortest Cycle	1900
27	1285D	Dr. Evil Underscores	1900
28	846D	Monitor	1900
29	294C	Shaass and Lights	1900
30	463D	Gargari and Permutations	1900
31	550D	Regular Bridge	1900
32	803C	Maximal GCD	1900
33	999D	Equalize the Remainders	1900
34	19B	Checkout Assistant	1900
35	41E	3-cycles	1900
36	1168B	Good Triple	1900
37	1360G	A/B Matrix	1900
38	16E	Fish	1900
39	138B	Digits Permutations	1900
40	388B	Fox and Minimal path	1900
41	134B	Pairs of Numbers	1900
42	1174D	Ehab and the Expected XOR Problem	1900
43	55C	Pie or die	1900
44	463C	Gargari and Bishops	1900
45	41D	Pawn	1900
46	25D	Roads not only in Berland	1900
47	883G	Orientation of Edges	1900
48	1175D	Array Splitting	1900
49	1488C	Two Policemen	1900
50	37C	Old Berland Language	1900
51	5C	Longest Regular Bracket Sequence	1900
52	1311F	Moving Points	1900
53	552D	Vanya and Triangles	1900
54	1041E	Tree Reconstruction	1900
55	746E	Numbers Exchange	1900
56	45C	Dancing Lessons	1900
57	319B	Psychos in a Line	1900
58	1276B	Two Fairs	1900
59	14D	Two Paths	1900
60	57C	Array	1900
61	1423B	Valuable Paper	1900
62	1067A	Array Without Local Maximums	1900
63	455B	A Lot of Games	1900
64	470D	Caesar Cipher	1900
65	1492D	Genius's Gambit	1900
66	25C	Roads in Berland	1900

2000

#	ID	Problem	Rating
1	600D	Area of Two Circles' Intersection	2000
2	661C	Array Sum	2000
3	784B	Kids' Riddle	2000
4	162G	Non-decimal sum	2000
5	784E	Twisted Circuit	2000
6	171E	MYSTERIOUS LANGUAGE	2000
7	661E	Divisibility Check	2000
8	20B	Equation	2000
9	952E	Cheese Board	2000
10	27E	Number With The Given Amount Of Divisors	2000
11	656C	Without Text	2000
12	267B	Dominoes	2000
13	153D	Date Change	2000
14	21C	Stripe 2	2000
15	490E	Restoring Increasing Sequence	2000
16	162I	Truncatable primes	2000
17	345C	Counting Fridays	2000
18	2B	The least round way	2000
19	656E	Out of Controls	2000
20	1132F	Clear the String	2000
21	101C	Vectors	2000
22	128D	Numbers	2000
23	21B	Intersection	2000
24	1288D	Minimax Problem	2000
25	1416B	Make Them Equal	2000
26	26C	Parquet	2000
27	1101D	GCD Counting	2000
28	1200E	Compress Words	2000
29	118E	Bertown roads	2000
30	1082E	Increasing Frequency	2000
31	117C	Cycle	2000
32	1156C	Match Points	2000
33	29D	Ant on the Tree	2000
34	1311D	Three Integers	2000
35	1366D	Two Divisors	2000
36	64F	Domain	2000
37	1354C2	Not So Simple Polygon Embedding	2000
38	461B	Appleman and Tree	2000
39	47C	Crossword	2000
40	466B	Wonder Room	2000
41	961D	Pair Of Lines	2000
42	710E	Generate a String	2000
43	388C	Fox and Card Game	2000
44	1211D	Teams	2000
45	1092E	Minimal Diameter Forest	2000
46	514C	Watto and Mechanism	2000
47	18E	Flag 2	2000
48	1209E1	Rotate Columns (easy version)	2000
49	1244E	Minimizing Difference	2000
50	963B	Destruction of a Tree	2000

2100

#	ID	Problem	Rating
1	661D	Maximal Difference	2100
2	919E	Congruence Equation	2100
3	1217D	Coloring Edges	2100
4	153E	Euclidean Distance	2100
5	457C	Elections	2100
6	530H	Points in triangle	2100
7	226D	The table	2100
8	609E	Minimum spanning tree for each edge	2100
9	1207F	Remainder Problem	2100
10	1499D	The Number of Pairs	2100
11	12E	Start of the session	2100
12	1003E	Tree Constructing	2100
13	620E	New Year Tree	2100
14	955C	Sad powers	2100
15	1C	Ancient Berland Circus	2100
16	484B	Maximum Value	2100
17	980D	Perfect Groups	2100
18	546E	Soldier and Traveling	2100
19	632D	Longest Subsequence	2100
20	431D	Random Task	2100
21	45H	Road Problem	2100
22	340B	Maximal Area Quadrilateral	2100
23	615E	Hexagons	2100
24	1098B	Nice table	2100
25	348B	Apple Tree	2100
26	530G	Levenshtein distance	2100
27	1355E	Restorer Distance	2100
28	475C	Kamal-ol-molk's Painting	2100
29	260D	Black and White Tree	2100
30	1431G	Number Deletion Game	2100
31	1454F	Array Partition	2100
32	1493D	GCD of an Array	2100
33	1167E	Range Deleting	2100
34	100H	Battleship	2100
35	1387A	Graph	2100
36	491B	New York Hotel	2100
37	837E	Vasya's Function	2100
38	1213F	Unstable String Sort	2100
39	1486D	Max Median	2100
40	1184A2	Heidi Learns Hashing (Medium)	2100
41	630P	Area of a Star	2100

2200

#	ID	Problem	Rating
1	409G	On a plane	2200
2	1070A	Find a Number	2200
3	1373E	Sum of Digits	2200
4	802E	Marmots (medium)	2200
5	1505I	Mysterious language again, seriously?	2200
6	11D	A Simple Task	2200
7	1154G	Minimum Possible LCM	2200
8	1505F	Math	2200
9	42C	Safe cracking	2200
10	1156E	Special Segments of Permutation	2200
11	1437E	Make It Increasing	2200
12	662B	Graph Coloring	2200
13	622E	Ants in Leaves	2200
14	323B	Tournament-graph	2200
15	272E	Dima and Horses	2200
16	1196F	K-th Path	2200
17	690C3	Brain Network (hard)	2200
18	1140E	Palindrome-less Arrays	2200
19	47D	Safe	2200
20	28C	Bath Queue	2200
21	723E	One-Way Reform	2200
22	1424M	Ancient Language	2200
23	946E	Largest Beautiful Number	2200
24	36C	Bowls	2200
25	1389E	Calendar Ambiguity	2200
26	25E	Test	2200
27	575G	Run for beer	2200
28	274D	Lovely Matrix	2200
29	661G	Hungarian Notation	2200
30	13C	Sequence	2200
31	19C	Deletion of Repeats	2200
32	1168C	And Reachability	2200
33	1157G	Inverse of Rows and Columns	2200
34	1278E	Tests for problem D	2200
35	1220E	Tourism	2200
36	1249F	Maximum Weight Subset	2200
37	1438D	Powerful Ksenia	2200
38	1400E	Clear the Multiset	2200
39	678E	Another Sith Tournament	2200
40	1156D	0-1-Tree	2200
41	1503C	Travelling Salesman Problem	2200
42	1468A	LaIS	2200
43	153C	Caesar Cipher	2200
44	52C	Circular RMQ	2200
45	1034B	Little C Loves 3 II	2200

2300

#	ID	Problem	Rating
1	470H	Array Sorting	2300
2	130I	Array sorting	2300
3	306D	Polygon	2300
4	470G	Hamming Distance	2300
5	470F	Pairwise Sums	2300
6	425D	Sereja and Squares	2300
7	277B	Set of Points	2300
8	1132E	Knapsack	2300
9	1182E	Product Oriented Recurrence	2300
10	1468M	Similar Sets	2300
11	641G	Little Artem and Graph	2300
12	598C	Nearest vectors	2300
13	1276C	Beautiful Rectangle	2300
14	888G	Xor-MST	2300
15	845G	Shortest Path Problem?	2300
16	111D	Petya and Coloring	2300
17	64H	Table Bowling	2300
18	1268C	K Integers	2300
19	1093G	Multidimensional Queries	2300
20	993E	Nikita and Order Statistics	2300
21	690A2	Collective Mindsets (medium)	2300
22	1198D	Rectangle Painting 1	2300
23	42D	Strange town	2300
24	24E	Berland collider	2300
25	1188B	Count Pairs	2300
26	432E	Square Tiling	2300
27	487C	Prefix Product Sequence	2300
28	838E	Convex Countour	2300
29	97B	Superset	2300
30	1346G	Two IP Cameras	2300
31	995C	Leaving the Bar	2300
32	36D	New Game with a Chess Piece	2300
33	1488F	Dogecoin	2300
34	294E	Shaass the Great	2300
35	585D	Lizard Era: Beginning	2300
36	762D	Maximum path	2300
37	1211F	kotlinkotlinkotlinkotlin...	2300
38	1385G	Columns Swaps	2300
39	600E	Lomsat gelral	2300
40	660E	Different Subsets For All Tuples	2300
41	429C	Guess the Tree	2300
42	364C	Beautiful Set	2300
43	40C	Berland Square	2300
44	727E	Games on a CD	2300

2400

#	ID	Problem	Rating
1	661H	Rotate Matrix	2400
2	21D	Traveling Graph	2400
3	952F	2 + 2 != 4	2400
4	1051F	The Shortest Statement	2400
5	990G	GCD Counting	2400
6	1374F	Cyclic Shifts Sorting	2400
7	962F	Simple Cycles Edges	2400
8	720B	Cactusophobia	2400
9	417E	Square Table	2400
10	1186F	Vus the Cossack and a Graph	2400
11	1473E	Minimum Path	2400
12	1184E3	Daleks' Invasion (hard)	2400
13	632E	Thief in a Shop	2400
14	1423J	Bubble Cup hypothesis	2400
15	1202E	You Are Given Some Strings...	2400
16	266D	BerDonalds	2400
17	911F	Tree Destruction	2400
18	1187D	Subarray Sorting	2400
19	1027F	Session in BSU	2400
20	125E	MST Company	2400
21	1083E	The Fair Nut and Rectangles	2400
22	1401E	Divide Square	2400
23	64I	Sort the Table	2400
24	1000F	One Occurrence	2400
25	277E	Binary Tree on Plane	2400
26	303C	Minimum Modular	2400
27	1059E	Split the Tree	2400
28	1089K	King Kog's Reception	2400
29	915F	Imbalance Value of a Tree	2400
30	1028E	Restore Array	2400
31	1070I	Privatization of Roads in Berland	2400
32	1114F	Please, another Queries on Array?	2400
33	912E	Prime Gift	2400
34	1042F	Leaf Sets	2400
35	1036E	Covered Points	2400
36	342E	Xenia and Tree	2400
37	856D	Masha and Cactus	2400
38	409I	Feed the Golorp	2400
39	534F	Simplified Nonogram	2400
40	441E	Valera and Number	2400
41	1485F	Copy or Prefix Sum	2400
42	1093F	Vasya and Array	2400
43	24D	Broken robot	2400
44	959F	Mahmoud and Ehab and yet another xor task	2400
45	5E	Bindian Signalizing	2400
46	865D	Buy Low Sell High	2400
47	1257F	Make Them Similar	2400
48	1436E	Complicated Computations	2400

2500

#	ID	Problem	Rating
1	1505H	L BREAK into program	2500
2	401E	Olympic Games	2500
3	55E	Very simple problem	2500
4	23C	Oranges and Apples	2500
5	55D	Beautiful numbers	2500
6	290E	HQ	2500
7	23E	Tree	2500
8	1488G	Painting Numbers	2500
9	1468I	Plane Tiling	2500
10	813F	Bipartite Checking	2500
11	963D	Frequency of String	2500
12	449C	Jzzhu and Apples	2500
13	946G	Almost Increasing Array	2500
14	1418G	Three Occurrences	2500
15	1513F	Swapping Problem	2500
16	333E	Summer Earnings	2500
17	710D	Two Arithmetic Progressions	2500
18	1467E	Distinctive Roots in a Tree	2500
19	678F	Lena and Queries	2500
20	1198E	Rectangle Painting 2	2500
21	1043F	Make It One	2500
22	884E	Binary Matrix	2500
23	1427E	Xum	2500
24	442C	Artem and Array	2500
25	734F	Anton and School	2500
26	911G	Mass Change Queries	2500
27	840D	Destiny	2500
28	986C	AND Graph	2500
29	530I	Different variables	2500
30	1516E	Baby Ehab Plays with Permutations	2500
31	1117G	Recursive Queries	2500
32	1188C	Array Beauty	2500
33	1209E2	Rotate Columns (hard version)	2500
34	1521D	Nastia Plays with a Tree	2500
35	1327F	AND Segments	2500
36	1175F	The Number of Subpermutations	2500

2600

#	ID	Problem	Rating
1	1505G	Encoded message	2600
2	23D	Tetragon	2600
3	13D	Triangles	2600
4	1120E	The very same Munchhausen	2600
5	1348F	Phoenix and Memory	2600
6	1278F	Cards	2600
7	662C	Binary Table	2600
8	1493E	Enormous XOR	2600
9	1389F	Bicolored Segments	2600
10	1430G	Yet Another DAG Problem	2600
11	925D	Aztec Catacombs	2600
12	1325E	Ehab's REAL Number Theory Problem	2600
13	1140F	Extending Set of Points	2600
14	547D	Mike and Fish	2600
15	1209F	Koala and Notebook	2600
16	241E	Flights	2600
17	1070L	Odd Federalization	2600
18	2C	Commentator problem	2600
19	690E2	Photographs (II)	2600
20	802C	Heidi and Library (hard)	2600
21	682E	Alyona and Triangles	2600
22	1227G	Not Same	2600
23	338E	Optimize!	2600

2700

#	ID	Problem	Rating
1	1182F	Maximum Sine	2700
2	958E3	Guard Duty (hard)	2700
3	1270G	Subset with Zero Sum	2700
4	1019D	Large Triangle	2700
5	995E	Number Clicker	2700
6	293B	Distinct Paths	2700
7	827D	Best Edge Weight	2700
8	1194G	Another Meme Problem	2700
9	293E	Close Vertices	2700
10	107E	Darts	2700
11	293D	Ksusha and Square	2700
12	70D	Professor's task	2700
13	1366G	Construct the String	2700
14	1205D	Almost All	2700
15	982F	The Meeting Place Cannot Be Changed	2700

2800

#	ID	Problem	Rating
1	600F	Edge coloring of bipartite graph	2800
2	1067E	Random Forest Rank	2800
3	1442D	Sum	2800
4	575I	Robots protection	2800
5	819E	Mister B and Flight to the Moon	2800
6	802F	Marmots (hard)	2800
7	290F	Greedy Petya	2800
8	418D	Big Problems for Organizers	2800
9	1039D	You Are Given a Tree	2800
10	1436F	Sum Over Subsets	2800
11	480E	Parking Lot	2800
12	983E	NN country	2800
13	908G	New Year and Original Order	2800
14	1031F	Familiar Operations	2800
15	325E	The Red Button	2800

2900

#	ID	Problem	Rating
1	1285F	Classical?	2900
2	1198F	GCD Groups 2	2900
3	1487F	Ones	2900
4	802O	April Fools' Problem (hard)	2900
5	598F	Cut Length	2900
6	1032G	Chattering	2900
7	1221G	Graph And Numbers	2900
8	1129D	Isolation	2900
9	1310E	Strange Function	2900
10	1452F	Divide Powers	2900
11	871E	Restore the Tree	2900
12	128E	Birthday	2900
13	19E	Fairy	2900
14	455E	Function	2900
15	980F	Cactus to Tree	2900
16	886F	Symmetric Projections	2900

3000

#	ID	Problem	Rating
1	364E	Empty Rectangles	3000
2	1418F	Equal Product	3000
3	1476F	Lanterns	3000
4	335F	Buy One, Get One Free	3000
5	243E	Matrix	3000
6	1175G	Yet Another Partiton Problem	3000
7	618F	Double Knapsack	3000
8	57E	Chess	3000
9	504E	Misha and LCP on Tree	3000
10	1211I	Unusual Graph	3000
11	375E	Red and Black Tree	3000

3100

#	ID	Problem	Rating
1	1168E	Xor Permutations	3100
2	1463F	Max Correct Set	3100
3	720F	Array Covering	3100
4	164D	Minimum Diameter	3100
5	804E	The same permutation	3100
6	1329D	Dreamoon Likes Strings	3100
7	1307G	Cow and Exercise	3100
8	1476G	Minimum Difference	3100
9	468E	Permanent	3100
10	1425C	Captain of Knights	3100
11	1188D	Make Equal	3100
12	986D	Perfect Encoding	3100
13	1225G	To Make 1	3100
14	1286D	LCC	3100
15	1067D	Computer Game	3100
16	720C	Homework	3100
17	407E	k-d-sequence	3100
18	442E	Gena and Second Distance	3100

3200

#	ID	Problem	Rating
1	690F3	Tree of Life (hard)	3200
2	1408I	Bitwise Magic	3200
3	1007D	Ants	3200
4	571E	Geometric Progressions	3200
5	1268D	Invertation in Tournament	3200
6	457F	An easy problem about trees	3200

3300

#	ID	Problem	Rating
1	1329E	Dreamoon Loves AA	3300
2	906E	Reverses	3300
3	1266G	Permutation Concatenation	3300

3400

#	ID	Problem	Rating
1	1268E	Happy Cactus	3400
2	1431J	Zero-XOR Array	3400

3500

#	ID	Problem	Rating
1	1458F	Range Diameter Sum	3500
2	1054H	Epic Convolution	3500
3	1470F	Strange Covering	3500
4	799G	Cut the pie	3500

List of short Codeforces problems with a statement of 1000 characters or less. Python script and data files included.

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Shortest problems on Codeforces

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An Insurance firm providing tour insurance is facing higher claim frequency

Python Interactive Graphical System made during Computer Graphics classes (INE5420-2021.1)

Contains the code of my learning of Python OOP.

ICEtool - ICEtool plugin for QGIS

Collatz Sanısını Test Eden Ve Kanıtlayan Bir Python Programı