Submission #153189

#	Time	Username	Problem	Language	Result	Execution time	Memory
153189		fedoseevtimofey	Cake 3 (JOI19_cake3)	C++14	0 / 100	3 ms	376 KiB

cake3

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef long double ld;

int main() {
    ios_base::sync_with_stdio(false); cin.tie(0); cout.setf(ios::fixed); cout.precision(20);
    #ifdef LOCAL
    freopen("input.txt", "r", stdin);
    freopen("output.txt", "w", stdout);
    #endif
    int n, m;
    cin >> n >> m;
    vector <pair <int, int>> a(n);
    for (int i = 0; i < n; ++i) cin >> a[i].second >> a[i].first;
    sort(a.begin(), a.end());
    ll ans = 0;
    for (int i = 0; i < n; ++i) {
        multiset <int> cur;
        for (int j = i; j < n; ++j) {
            cur.insert(a[j].second);
            if (cur.size() >= m) {
                ll res = 0;
                auto uk = --cur.end();
                for (int k = 0; k < m; ++k) {
                    res += *uk;
                    if (k + 1 < m) --uk;
                }
                ans = max(ans, res - 2LL * a[j].first + 2LL * a[i].first);
            }
        }
    }
    cout << ans << '\n';
}

Compilation message (stderr)

cake3.cpp: In function 'int main()':
cake3.cpp:24:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
             if (cur.size() >= m) {
                 ~~~~~~~~~~~^~~~

• Subtask 1: 0 / 5
• Subtask 2: 0 / 19
• Subtask 3: 0 / 76