Submission #1317542

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Source Code Expand

#include <iostream>
#include <vector>
#include <cstdio>
#include <algorithm>

using namespace std;

int main(){
    int n,k;
    cin>>n>>k;
    vector<int> v;
    for(int i=0;i<n;i++){
        int tmp;
        cin>>tmp;
        v.push_back(tmp);
    }

    sort(v.rbegin(),v.rend());

    // for(int i=0;i<n;i++){
    //     cout<<v[i]<<" ";
    // }
    double now=0.0;
    for(int i=k-1;i>=0;i--){
        now=(now+v[i])/2;
        // cout<<now<<endl;
    }

    
    printf("%.7f\n", now);

}

Submission Info

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