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P2788 数学1(math1)- 加减算式
2022-07-07 08:14:00 【暴揍键盘的程序猿】
# 数学1(math1)- 加减算式
## 题目背景
蒟蒻HansBug在数学考场上,挠了无数次的头,可脑子里还是一片空白。
## 题目描述
好不容易啊,HansBug终于熬到了做到数学最后一题的时刻了,眼前是一堆杂乱的加减算式。显然成功就在眼前了。可是他脑细胞和RP已经消耗殆尽,所以这个重要的任务就交给你们啦。
## 输入格式
一行,包含一个字符串形式的加减法多项式(每一项数字范围为0-32767)。
## 输出格式
一个整数,为计算所得的结果(保证计算结果不会超过长整型范围)。
## 样例 #1
### 样例输入 #1
```
1+2-3
```
### 样例输出 #1
```
0
```
## 提示
字符串长度不超过60000
【思路】
python2。
【40分代码】
#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代码】
print(input())
忘调语言了。
【AC代码】
print(input())
加速神器火车头
#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")
# 数学1(math1)- 加减算式
## 题目背景
蒟蒻HansBug在数学考场上,挠了无数次的头,可脑子里还是一片空白。
## 题目描述
好不容易啊,HansBug终于熬到了做到数学最后一题的时刻了,眼前是一堆杂乱的加减算式。显然成功就在眼前了。可是他脑细胞和RP已经消耗殆尽,所以这个重要的任务就交给你们啦。
## 输入格式
一行,包含一个字符串形式的加减法多项式(每一项数字范围为0-32767)。
## 输出格式
一个整数,为计算所得的结果(保证计算结果不会超过长整型范围)。
## 样例 #1
### 样例输入 #1
```
1+2-3
```
### 样例输出 #1
```
0
```
## 提示
字符串长度不超过60000
【思路】
python2。
【40分代码】
#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代码】
print(input())
忘调语言了。
【AC代码】
print(input())
加速神器火车头
#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")
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