https://atcoder.jp/contests/abc153/tasks/abc153_c

解説

https://atcoder.jp/contests/abc153/submissions/9783372

int N, K, H[201010];
//---------------------------------------------------------------------------------------------------
void _main() {
    cin >> N >> K;
    rep(i, 0, N) cin >> H[i];

    sort(H, H + N);
    ll ans = 0;
    rep(i, 0, N - K) ans += H[i];
    cout << ans << endl;
}