超实用代码前缀

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#include<iostream>
#include<algorithm>
#include<cstdio>
#include<cstdlib>
#include<cmath>
#include<cstring>
#include<string>
#include<set>
#include<map>
#include<vector>
#include<queue>
#include<deque>
#include<utility>
#define DEBUG fprintf(stderr, "Passing function [%s] line %d\n", __FUNCTION__,__LINE__);
#define DE(sss) fprintf(stderr, "Passing function [%s] line %d  %s=", __FUNCTION__,__LINE__,#sss);cout<<sss<<endl;
using namespace std;
int main()
{
    return 0;
}