输入输出外挂

#include <bits/stdc++.h>
using namespace std;
#define REP(i,a,b)  for(int i=a;i<=(b);++i)
#define REPD(i,a,b) for(int i=a;i>=(b);--i)
int inline readInt(){
char ch; bool sign=false;
do{ch=getchar();if(ch=='-') sign=true;}while(!isdigit(ch));
int x=0;
do{x=x*10+ch-'0';ch=getchar();}while(isdigit(ch));
return sign?-x:x;
}
int buf[10];
int inline printInt(int n){
int p=0;
bool sign=n<0;
n=sign?-n:n;
if(n==0) p++;
while(n){buf[p++]=n%10;n/=10;}
if(sign) putchar('-');
REPD(i,p-1,0) putchar('0'+buf[i]);
}