Submission #1371307

---

Source Code Expand

#include <iostream>
using namespace std;
int main(void){
    int n,k;
    double ans=0,r[110],w;
    cin>>n>>k;
    for(int i=0;i<n;i++){
        cin>>r[i];
    }
    for(int i=0;i<n;i++){
        for(int j=0;j<n-i-1;j++){
            if(r[j]<r[j+1]){
                w=r[j];
                r[j]=r[j+1];
                r[j+1]=w;
            }
        }
    }
    for(int i=0;i<k;i++){
        ans=(ans+r[k-1-i])/2;
    }
    printf("%10lf\n",ans);
    return 0;
}

Submission Info

Judge Result