问题标题: 酷町堂：作死

@沙宸安 

devc++里的显示：

编译单个文件...
--------
- 文件名: C:\Users\chenting\Documents\未命名7.cpp
- 编译器名: TDM-GCC 4.9.2 64-bit Release

处理 C++ 源文件...
--------
- C++ 编译器: C:\Program Files (x86)\Dev-Cpp\MinGW64\bin\g++.exe
- 命令: g++.exe "C:\Users\chenting\Documents\未命名7.cpp" -o "C:\Users\chenting\Documents\未命名7.exe"  -I"C:\Program Files (x86)\Dev-Cpp\MinGW64\include" -I"C:\Program Files (x86)\Dev-Cpp\MinGW64\x86_64-w64-mingw32\include" -I"C:\Program Files (x86)\Dev-Cpp\MinGW64\lib\gcc\x86_64-w64-mingw32\4.9.2\include" -I"C:\Program Files (x86)\Dev-Cpp\MinGW64\lib\gcc\x86_64-w64-mingw32\4.9.2\include\c++" -L"C:\Program Files (x86)\Dev-Cpp\MinGW64\lib" -L"C:\Program Files (x86)\Dev-Cpp\MinGW64\x86_64-w64-mingw32\lib" -static-libgcc

编译结果...
--------
- 错误: 0
- 警告: 0
- 输出文件名: C:\Users\chenting\Documents\未命名7.exe
- 输出大小: 1.83725643157959 MiB
- 编译时间: 1.02s
 

酷町堂网站里的显示：

Compile Error：0分代码共享

刘承志的测评结果：

main.cpp: In function 'int main()':
main.cpp:77:13: error: 'printf' was not declared in this scope
   printf("-");
             ^
main.cpp:94:42: error: 'printf' was not declared in this scope
  for(int i=len;i>=1;i--) printf("%d",c[i]);
                                          ^

各位，因为头文件太多，导致忘了加cstdio

现在这代码它AC了！！！！！

#include<limits>
#include<list> 
#include<cstdio>
#include<iomanip>
#include<ios> 
#include<iostream>
#include<istream> 
#include<ostream> 
#include<queue> 
#include<set> 
#include<stack> 
#include<stdexcept> 
#include<streambuf> 
#include<string> 
#include<utility> 
#include<cwchar>
#define N 1001
#pragma GCC optimize(3)
#pragma GCC target("avx")
#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")
#pragma GCC optimize(2)
using namespace std;
int a[300],b[300],c[300];
string s1;
string s2;
int main()
{
    cin>>s1;
    int len1=s1.size();
    cin>>s2;
    int len2=s2.size();
    if(len1<len2||(len1==len2&&s1<s2))
    {
        printf("-");
        swap(s1,s2);
        swap(len1,len2);
    }
    for(int i=1;i<=len1;i++) a[i]=s1[len1-i]-'0';
    for(int i=1;i<=len2;i++) b[i]=s2[len2-i]-'0';
    int len=max(len1,len2);
    for(int i=1;i<=len;i++)
    {
        if(a[i]<b[i])
        {
            a[i+1]--;
            a[i]+=10;
        }
        c[i]=a[i]-b[i];
    }
    while(c[len]==0&&len>=2) len--;
    for(int i=len;i>=1;i--) printf("%d",c[i]);
    return 0;
}