1414: [17noip popularization group] score

1414：【17NOIP Popularization group 】 achievement

The time limit : 1000 ms         Memory limit : 65536 KB
Submission number : 25230     Passing number : 15468

【 Title Description 】

Niuniu has recently learned C++ introductory course , The total score of this course is calculated as ：

Total score = Homework results × 20% + Test results × 30% + Final exam results × 50%

Niuniu wants to know , How many points can this course get in the end .

【 Input 】

Only 1 That's ok , Contains three nonnegative integers A、B、C, They represent the performance of Niu Niu 、 Microtest Grades and final exam results . Separate two adjacent numbers with a space , The full marks of three events are 100 branch .

【 Output 】

Only 1 That's ok , Contains an integer , That is the total score of Niuniu course , The full mark is the same 100 branch .

【 sample input 】

100 100 80

【 sample output 】

90

【 Tips 】

【 I/o sample 1 explain 】 Niu Niu's homework result is 100 branch , The test result is 100 branch , The final exam result is 80 branch , Assembly Achievement is 100 × 20% + 100 × 30% + 80 × 50% = 20 + 30 + 40 = 90.

【 I/o sample 2】

Input ：

60 90 80

Output :

79

【 I/o sample 2 explain 】 Niu Niu's homework result is 60 branch , The test result is 90 branch , The final exam result is 80 branch , The total score is 60 × 20% + 90 × 30% + 80 × 50% = 12 + 27 + 40 = 79.  

【 Data description 】

about 30% The data of ,A = B = 0.

For another 30% The data of ,A = B = 100.

about 100% The data of , 0 ≤ A、B、C ≤ 100 And A、B、C All are 10 Integer multiple .

#include<iostream>
using namespace std;
int main()
{
	int a, b, c, sum;
	cin >> a >> b >> c;
	sum = a * 0.2 +b *0.3 +c * 0.5;
	cout << sum;

}