Submission #910025

#	Time	Username	Problem	Language	Result	Execution time	Memory
910025		raphaelp	Art Exhibition (JOI18_art)	C++14	100 / 100	385 ms	28972 KiB

art

#include <bits/stdc++.h>
using namespace std;
int main()
{
    long long N;
    cin >> N;
    vector<pair<long long, long long>> Tab(N);
    for (long long i = 0; i < N; i++)
    {
        long long a, b;
        cin >> a >> b;
        Tab[i] = {a, b};
    }
    sort(Tab.begin(), Tab.end());
    vector<long long> cum(N + 1), size(N + 1);
    for (long long i = 1; i <= N; i++)
    {
        size[i] = Tab[i - 1].first;
        cum[i] = cum[i - 1] + Tab[i - 1].second;
    }
    long long best = 0;
    long long last = 1;
    for (long long i = 1; i <= N; i++)
    {
        long long temp = cum[i] - cum[last - 1];
        temp -= size[i] - size[last];
        if (temp <= cum[i] - cum[i - 1])
        {
            temp = cum[i] - cum[i - 1];
            last = i;
        }
        best = max(best, temp);
    }
    cout << best;
}

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