#include<iostream>

using namespace std;

int main()

{

int i,num;

int chinese[50],math[50],english[50];

int studentid[50];

double ave[50];

double sum[50];

cout<<"请输入学生人数："<<endl;

cin>>num;

cout<<"studentid   chinese    math     english"<<endl;

for(i=0;i<num;i++)

{

cout<<"N0.1"<<i+1;

cin>>studentid[i]>>chinses[i]>>math[i]>>english[i]>>endl;

sum[i]=(double)(chinese[i]+math[i]+english[i]);

ave[i]=sum[i]/3;

}

for(i=0;i<num;i++)

{

cout<<studentid[i]<<"  "<<chinese[i]<<"  "<<math[i]<<"  "<<english[i]<<"  "<<ave[i]<<"  "<<sum[i]<<endl;

}

return 0;

}