```
#include<iostream>
#include<cstring>
#include <algorithm>
#include <math.h>
using namespace std;
struct x
{
int no;
int score;
}a[100000];
int main()
{
int n,m,i,j;
cin>>n>>m;
for(i=0;i<n;i++)
{
cin>>a[i].no>>a[i].score;
}
for(i=0;i<n-1;i++)
{
for(j=i+1;j<n;j++)
{
if(a[i].score<a[j].score||(a[i].score==a[j].score&&a[i].no>a[j].no))
{
int t1=a[i].score,t2=a[i].no;
a[i].score=a[j].score; a[i].no=a[j].no;
a[j].score=t1; a[j].no=t2;
}
}
}
int t=m*1.5;
if(t>n)t=n;
while(a[t].score==a[t-1].score&&t+1<=n)t++;//可以不用k来存个数，直接用t存即可
cout<<a[t-1].score<<" "<<t<<endl;
for(i=0;i<t;i++)
{
cout<<a[i].no<<" "<<a[i].score<<endl;
}
return 0;
}
```
by Wilderness_114514 @ 2023-12-28 10:27:56
@[Wilderness_114514](/user/816495) 谢谢大佬
by afeng05 @ 2024-01-02 15:18:35