fastscan.cpp

#include<bits/stdc++.h>
using namespace std;

int fastscan(){
int ret, num = 0 , negetive = -1    ;
char ch ;
    //getchar();
    while(ch = getchar()){
    if(ch != ' ' || ch ==  '\n' ) break ;

    }
    if(ch == '-' ) negetive = 1 ;
    else    num = 10* num + ch -'0';
//  if(ch ==  'x') return -1 ;
    while(1){
        ch =  getchar();
        if(ch ==  '\n' || ch == ' ' ) break ;
        num = 10* num + ch -'0';

    }
    if(negetive ==  1) num *= -1 ;
    return num  ;
}

int main(){
int k ;
while(1){
   k = fastscan();
  cout << k <<endl ;


}


return 0 ;
}