数据真的有坑

// TEST by XZZ__233 sorry for terrible caused.
#include<cstdio>
#include<algorithm>
using namespace std;
int main(){
    int n;
    while(scanf("%d",&n)==1){
        if(n>50)for(;;);
        else while(n--)scanf("%*s");
    }
    return 0;
}