这45（是我）的代码

#include<bits/stdc++.h>
using namespace std;
struct Student
{
	string name;
	int chinese,math,english;
	int total=chinese+math+english;
}a[1001];
int main()
{
	int n;
	cin>>n;
	for(int i=0;i<n;i++)cin>>a[i].name>>a[i].chinese>>a[i].math>>a[i].english;
	for(int i=0;i<n;i++)
	{
		for(int j=i+1;j<n;j++)
		{
			if(a[i].chinese>=a[j].chinese-5 and a[i].chinese<=a[j].chinese+5 and a[i].math>=a[j].math-5 and a[i].math<=a[j].math+5 and a[i].english>=a[j].english-5 and a[i].english<=a[j].english+5 and a[i].total>=a[j].total-10 and a[i].total<=a[j].total+10)cout<<a[i].name<<' '<<a[j].name<<'\n';
		}
	}
	return 0;
}