一个超全的头文件

//STATUS:C++_AC_500MS_1012KB
#include <functional>
#include <algorithm>
#include <iostream>
//#include <ext/rope>
#include <fstream>
#include <sstream>
#include <iomanip>
#include <numeric>
#include <cstring>
#include <cassert>
#include <cstdio>
#include <string>
#include <vector>
#include <bitset>
#include <queue>
#include <stack>
#include <cmath>
#include <ctime>
#include <list>
#include <set>
#include <map>
using namespace std;
//using namespace __gnu_cxx;
//define
#define pii pair<int,int>
#define mem(a,b) memset(a,b,sizeof(a))
#define lson l,mid,rt<<1
#define rson mid+1,r,rt<<1|1
#define PI acos(-1.0)
//typedef
typedef __int64 LL;
typedef unsigned __int64 ULL;
//const
const int N=100010;
const int INF=0x3f3f3f3f;
const int MOD=100000,STA=8000010;
const LL LNF=1LL<<60;
const double EPS=1e-8;
const double OO=1e15;
const int dx[4]={-1,0,1,0};
const int dy[4]={0,1,0,-1};
const int day[13]={0,31,28,31,30,31,30,31,31,30,31,30,31};
//Daily Use ...
inline int sign(double x){return (x>EPS)-(x<-EPS);}
template<class T> T gcd(T a,T b){return b?gcd(b,a%b):a;}
template<class T> T lcm(T a,T b){return a/gcd(a,b)*b;}
template<class T> inline T lcm(T a,T b,T d){return a/d*b;}
template<class T> inline T Min(T a,T b){return a<b?a:b;}
template<class T> inline T Max(T a,T b){return a>b?a:b;}
template<class T> inline T Min(T a,T b,T c){return min(min(a, b),c);}
template<class T> inline T Max(T a,T b,T c){return max(max(a, b),c);}
template<class T> inline T Min(T a,T b,T c,T d){return min(min(a, b),min(c,d));}
template<class T> inline T Max(T a,T b,T c,T d){return max(max(a, b),max(c,d));}
//End

另一个头文件

包含快速输入函数

#include <algorithm>
#include <iostream>
#include <fstream>
#include <sstream>
#include <iomanip>

#include <map>
#include <set>
#include <list>
#include <stack>
#include <queue>
#include <deque>
#include <vector>
#include <string>
#include <bitset>
#include <complex>
#include <memory>
#include <numeric>

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <time.h>
#include <ctype.h>
#include <locale.h>

using namespace std ;

const int inf=0x7f7f7f7f ;
const int INF=0x7fffffff ;
const double eps=1e-8 ;
const double pi=acos(-1.0);

template<class Type>bool scanf(Type&val)
{
    char cin=getchar();
    if(cin==EOF)return false ;
    else 
    {
        val=0 ;
        while('0'>cin||cin>'9')if((cin=getchar())==EOF)return false ;
        while('0'<=cin&&cin<='9')
        {
            val*=10,val+=(cin-'0');
            if((cin=getchar())==EOF)return false ;
        }
        return true ;
    }
}

#define _gret(a,b) ((a)-(b)>eps)
#define _less(a,b) ((b)-(a)>eps)
#define _equl(a,b) (fabs((a)-(b))<eps)
#define _sign(val) (_gret(val,0.0)?1:(_equl(val,0.0)?0:-1))

#define _lowbit(val) ((val)&(-val))
#define _max(a,b) (_gret(a,b)?(a):(b))
#define _min(a,b) (_less(a,b)?(a):(b))
#define _for(i,a,b) for(int i=(a);i<=(b);i++)
#define _clr(a,val,n) memset(a,val,sizeof(a[0])*(n))