输入输出

In&Out.cpp

#include<iostream>
#include<cstdio>
#include<ctype.h>
using namespace std;

inline int readint()
{
	char c=getchar();
	while(!isdigit(c))c=getchar();
	int x=0;
	while(isdigit(c))
	{
		x=x*10+c-'0';
		c=getchar();
	}
	return x;
}
int buf[10];
inline void writeint(int x)
{
	int p=0;
	if(x==0)p++;
	else while(x)
	{
		buf[p++]=x%10;
		x/=10;
	}
	for(int i=p-1;i>=0;i--)putchar('0'+buf[i]);
	return;
}