2测点答案错误，后面连续五道运行错误

#include <iostream>
#include <algorithm>
#include <cmath>
using namespace std;

struct oprt{
    int id;
    float score;
}a[100];

int main()
{
    //n.m如题。scline是分数线，pass_num为通过人数
    int n,m,scline;
    cin>>n>>m;
    int pass_num=n;
    for(int i=0;i<n;i++)
        cin>>a[i].id>>a[i].score;
    for(int i=0;i<n;i++)
        for(int j=i+1;j<n;j++)
        {
            if(a[i].score<a[j].score || (a[i].score==a[j].score&& a[i].id>a[j].id))
                swap(a[i],a[j]);
        }
    int temp=floor(m*1.5);
    scline=a[temp].score;
    for(int k=0;k<n;k++)
        if(a[k].score<scline)
            pass_num--;
    cout << scline<<" "<<pass_num<<endl;
    for(int i=0;i<n;i++)
    {
        if(a[i].score>=scline)
            cout<<a[i].id<<" "<<a[i].score<<endl;
    }
    return 0;
}