注意题目要求输入至文件结束，此外就没有什么问题了。

#include<stdio.h>
#include<string.h>
#include<stdlib.h> 
#include<math.h>


int main(){
	int i,n;
	while(scanf("%d",&n)!=EOF){
	int d,g;
	int zongjia=0;
	int zongjian=0;
	for(i=0;i<n;i++){
		scanf("%d %d",&d,&g);
		zongjia+=g;
		zongjian+=d;	
	}
	if(zongjia>zongjian) printf("xmsl\n");
	else if(zongjia==zongjian) printf("amazing!\n");
	else if(zongjia<zongjian) printf("ni yao tu le\n");
}
	return 0;
}

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

int main() { int n;

int d,g;

while(scanf("%d",&n)!=EOF)
{
	int down=0,up=0;
	
	for(int i=1; i<=n; i++)
	{
		cin>>d>>g;
		down+=d;
		up+=g;
	}
	
	if(down==up)
		cout<<"amazing!"<<endl;
	else if(down<up)
		cout<<"xmsl"<<endl;
	else
		cout<<"ni yao tu le"<<endl;
	
}

return 0;

}