https://www.nowcoder.com/practice/a9fa482eb05149cdbad88689e3cb5f66?tpId=40&tqId=21551&rp=1&ru=%2Fta%2Fkaoyan&qru=%2Fta%2Fkaoyan%2Fquestion-ranking&tab=answerKey

#include<cstdio>
#include<iostream>
#include<string>
#include<sstream>
#include<algorithm> 
using namespace std;
struct student
{
    
    
	int id;
	string name;
	int age;
}stu[35];
bool cmp(student a,student b) 
{
    
    
    if(a.age==b.age)
    {
    
    
        if(a.id==b.id)
        {
    
    
            return a.name<b.name;
        }
        return a.id<b.id;
    }
	return a.age<b.age;
}
int main(void)
{
    
    
	int n; cin>>n;
	for(int i=0;i<n;i++)
	{
    
    
		cin>>stu[i].id>>stu[i].name>>stu[i].age;
	}
	sort(stu,stu+n,cmp);
	for(int i=0;i<3;i++) 
	cout<<stu[i].id<<" "<<stu[i].name<<" "<<stu[i].age<<endl;
	return 0;
}