제출 #151167

#제출 시각아이디문제언어결과실행 시간메모리
151167TAMREF포도주 시음 (FXCUP2_wine)C++11
1 / 1
72 ms4644 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; if(~k&1) 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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