Submission #898039

#	Time	Username	Problem	Language	Result	Execution time	Memory
898039		andrei_iorgulescu	Art Exhibition (JOI18_art)	C++14	100 / 100	141 ms	24920 KiB

art

#include <bits/stdc++.h>

using namespace std;

#define int long long

int n;
pair<int,int> a[500005];
int sp[500005];

signed main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
    cin >> n;
    for (int i = 1; i <= n; i++)
        cin >> a[i].first >> a[i].second;
    sort(a + 1,a + n + 1);
    for (int i = 1; i <= n; i++)
        sp[i] = sp[i - 1] + a[i].second;
    int ans = 0,mx = 0;
    for (int i = 1; i <= n; i++)
    {
        ///basically asta are size maxim, vreau sa maximizez sp[i] - sp[j - 1] + size[j] -> caut cea cu size[j] - sp[j - 1] maxima
        mx = max(mx,a[i].first - sp[i - 1]);
        ans = max(ans,sp[i] + mx - a[i].first);
    }
    cout << ans;
    return 0;
}

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