Submission #702240

#	Time	Username	Problem	Language	Result	Execution time	Memory
702240		qwe1rt1yuiop1	Art Exhibition (JOI18_art)	C++14	100 / 100	198 ms	24656 KiB

art

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

inline void solve()
{
    int n;
    cin >> n;
    vector<pii> v(n + 1);
    for (int i = 1; i <= n; ++i)
        cin >> v[i].first >> v[i].second;
    sort(v.begin(), v.end());
    vector<int> pre(n + 1);
    pre[0] = 0;
    for (int i = 1; i <= n; ++i)
        pre[i] = pre[i - 1] + v[i].second;
    
    int ans = 0, mx = -1e18;
    for (int i = 1; i <= n; ++i)
    {
        mx = max(mx, v[i].first - pre[i - 1]);
        ans = max(ans, pre[i] - v[i].first + mx);
    }
    cout << ans << '\n';
}

signed main()
{
    ios::sync_with_stdio(0), cin.tie(0), cout.tie(0);

    int tc = 1;
    // cin >> tc;
    while (tc--)
        solve();

    return 0;
}

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