제출 #151166

#제출 시각아이디문제언어결과실행 시간메모리
151166TAMREF포도주 시음 (FXCUP2_wine)C++11
0 / 1
2 ms376 KiB
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
int n, k, p[300005];
ll ans;

int main(){    
    ios_base::sync_with_stdio(0);cin.tie(0);
    cin >> n >> k;
    for(int i = 0; i < n; i++) cin >> p[i];
    sort(p, p+n);
    for(int i = 0; i < k/2; i++) ans -= p[i];
    for(int i = 0; i < (k+1)/2; i++) ans += p[n-1-i];
    cout << ans << '\n';
}
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