Submission #1131527

#	Time	Username	Problem	Language	Result	Execution time	Memory
1131527		lopkus	Art Exhibition (JOI18_art)	C++20	100 / 100	118 ms	15952 KiB

art

#include <bits/stdc++.h>

#define int long long

using namespace std;

signed main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    int n;
    cin >> n;
    vector<pair<int,int>> a(n + 1);
    for(int i = 1; i <= n; i++) {
        cin >> a[i].first >> a[i].second;
    }
    sort(a.begin() + 1, a.end());
    vector<int> pref(n + 1, 0);
    vector<int> suf(n + 2, -1e18);
    for(int i = 1; i <= n; i++) {
        pref[i] = pref[i - 1] + a[i].second;
    }
    for(int i = n; i >= 1; i--) {
        suf[i] = max(pref[i] - a[i].first, suf[i + 1]);
    }
    int ans = 0;
    for(int i = 1; i < n; i++) {
        ans = max(ans, suf[i] - pref[i - 1] + a[i].first);
    }
    cout << ans;
}

• Subtask 1: 10 / 10
• Subtask 2: 20 / 20
• Subtask 3: 20 / 20
• Subtask 4: 50 / 50