编程经验积累贴

int范围内的大数取得inf = 1<<31-1

int  = 4e9

2^15 = 3e4

long  = 1.8e19

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 自用头文件:

#include <iostream>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <cmath>
#include <string>
#include <stack>
#include <vector>
#include <queue>
#include <algorithm>

using namespace std;