Submission #1037431

#	Time	Username	Problem	Language	Result	Execution time	Memory
1037431		DeathIsAwe	Art Exhibition (JOI18_art)	C++14	100 / 100	295 ms	22864 KiB

art

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

int32_t main() {
    int n; cin >> n;
    vector<pair<int,int>> arts(n);
    for (int i=0;i<n;i++) {
        cin >> arts[i].first >> arts[i].second;
    }
    sort(arts.begin(), arts.end());
    


    int ans = arts[0].second, leftsum = arts[0].second;
    vector<int> diffvec = {0};
    priority_queue<int> diffs; diffs.push(0);
    for (int i=1;i<n;i++) {
        diffvec.push_back(diffvec.back() + arts[i].first - arts[i-1].first - arts[i-1].second);
        diffs.push(diffvec.back());
        leftsum += arts[i].second - (arts[i].first - arts[i-1].first);
        //cout << ans << ' ' << diffs.top() << '\n';
        ans = max(ans, leftsum + diffs.top());
    }
    cout << ans;
}

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