Submission #730247

#	Time	Username	Problem	Language	Result	Execution time	Memory
730247		Desh03	Art Exhibition (JOI18_art)	C++17	100 / 100	193 ms	40364 KiB

art

#include <bits/stdc++.h>
using namespace std;
#define int long long

int art_exhibition(int n, vector<int> a, vector<int> b) {
    int ans = 0;
    vector<pair<int, int>> v;
    for (int i = 0; i < n; i++) v.push_back({a[i], b[i]});
    sort(v.begin(), v.end());
    vector<int> pre(n + 1);
    for (int i = 0; i < n; i++)
        pre[i + 1] = pre[i] + v[i].second;
    for (int i = 0; i < n; i++) pre[i] -= v[i].first;
    int mn = pre[0];
    for (int i = 1; i <= n; i++) {
        ans = max(ans, pre[i] - mn + (i == n ? 0 : v[i].first) - v[i - 1].first);
        mn = min(mn, pre[i]);
    }
    return ans;
}

signed main() {
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    int n;
    cin >> n;
    vector<int> a(n), b(n);
    for (int i = 0; i < n; i++) cin >> a[i] >> b[i];
    cout << art_exhibition(n, a, b) << '\n';
}

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