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P2788 math 1 - addition and subtraction

2022-07-07 10:32:00 【A program ape who beats the keyboard violently】

P2788 mathematics 1（math1）- Addition and subtraction formula

# mathematics 1（math1）- Addition and subtraction formula

## Background

Konnyaku HansBug In the math exam room , Scratched my head countless times , But my mind is still blank .

## Title Description

It's not easy ,HansBug Finally, it's time to do the last math problem , There is a mess of addition and subtraction . Obviously, success is at hand . But his brain cells and RP It has been exhausted , So this important task is up to you .

## Input format

a line , Contains an addition and subtraction polynomial in the form of a string （ Each number ranges from 0-32767）.

## Output format

An integer , For the calculated results （ Ensure that the calculation result does not exceed the long integer range ）.

## Examples #1

### The sample input #1

```
1+2-3
```

### Sample output #1

```
0
```

## Tips

The string length does not exceed 60000

【 Ideas 】

python2.

【40 Code division 】

#include<stdio.h>
#include<iostream>
using namespace std;
void fwrite(int n)
{
	if(n>9)fwrite(n/10);
	putchar(n%10+'0');
}
int ans,n;
signed main()
{
	while(scanf("%d",&n)!=EOF)ans+=n;
	fwrite(ans);	
	return 0;
}

【CE Code 】

print(input())

Forgot to tune the language .

【AC Code 】

print(input())

Accelerating artifact locomotive

#pragma GCC optimize(2)
#pragma GCC optimize(3)
#pragma GCC optimize("Ofast")
#pragma GCC optimize("inline")
#pragma GCC optimize("-fgcse")
#pragma GCC optimize("-fgcse-lm")
#pragma GCC optimize("-fipa-sra")
#pragma GCC optimize("-ftree-pre")
#pragma GCC optimize("-ftree-vrp")
#pragma GCC optimize("-fpeephole2")
#pragma GCC optimize("-ffast-math")
#pragma GCC optimize("-fsched-spec")
#pragma GCC optimize("unroll-loops")
#pragma GCC optimize("-falign-jumps")
#pragma GCC optimize("-falign-loops")
#pragma GCC optimize("-falign-labels")
#pragma GCC optimize("-fdevirtualize")
#pragma GCC optimize("-fcaller-saves")
#pragma GCC optimize("-fcrossjumping")
#pragma GCC optimize("-fthread-jumps")
#pragma GCC optimize("-funroll-loops")
#pragma GCC optimize("-fwhole-program")
#pragma GCC optimize("-freorder-blocks")
#pragma GCC optimize("-fschedule-insns")
#pragma GCC optimize("inline-functions")
#pragma GCC optimize("-ftree-tail-merge")
#pragma GCC optimize("-fschedule-insns2")
#pragma GCC optimize("-fstrict-aliasing")
#pragma GCC optimize("-fstrict-overflow")
#pragma GCC optimize("-falign-functions")
#pragma GCC optimize("-fcse-skip-blocks")
#pragma GCC optimize("-fcse-follow-jumps")
#pragma GCC optimize("-fsched-interblock")
#pragma GCC optimize("-fpartial-inlining")
#pragma GCC optimize("no-stack-protector")
#pragma GCC optimize("-freorder-functions")
#pragma GCC optimize("-findirect-inlining")
#pragma GCC optimize("-fhoist-adjacent-loads")
#pragma GCC optimize("-frerun-cse-after-loop")
#pragma GCC optimize("inline-small-functions")
#pragma GCC optimize("-finline-small-functions")
#pragma GCC optimize("-ftree-switch-conversion")
#pragma GCC optimize("-foptimize-sibling-calls")
#pragma GCC optimize("-fexpensive-optimizations")
#pragma GCC optimize("-funsafe-loop-optimizations")
#pragma GCC optimize("inline-functions-called-once")
#pragma GCC optimize("-fdelete-null-pointer-checks")