#include<bits/stdc++.h>
using namespace std;
struct student
{
	int no,sc;
}a[5005];
bool cmp(student x,student y)
{
	if(x.sc!=y.sc)
		return x.sc>y.sc;
	if(x.no!=y.no)
		return x.no<y.no;
}
int main()
{
    int n,x,m,sum,y;
    cin>>n>>m;
    for(int i=1;i<=n;i++)
    	cin>>a[i].no>>a[i].sc;
    sort(a+1,a+n+1,cmp);
    y=m*1.5;
    x=a[y].sc;
    for(int i=1;i<=n;i++)
    	if(a[i].sc>=x)sum++;
    cout<<a[y].sc<<" "<<sum<<endl;
    for(int i=1;i<=n;i++)
    	if(a[i].sc>=x)cout<<a[i].no<<" "<<a[i].sc<<endl;
}```
https://www.luogu.com.cn/record/119452848
https://www.luogu.com.cn/record/119452837