제출 #1026255

#제출 시각아이디문제언어결과실행 시간메모리
1026255vaneaArt Exhibition (JOI18_art)C++14
100 / 100
131 ms12376 KiB
#include <bits/stdc++.h>
using namespace std;
using ll = long long;

const ll NINF = -1e18;

int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int n;
    cin >> n;
    vector<array<ll, 2>> v(n+1);
    vector<ll> pref(n+1);
    for(int i = 1; i <= n; i++) {
        cin >> v[i][0] >> v[i][1];
    }
    sort(v.begin(), v.end());
    ll ans = 0, acc = 0, lo = 0;
    for(int i = 1; i <= n; i++) {
        lo = max(lo, -acc+v[i][0]);
        acc += v[i][1];
        ans = max(ans, acc - v[i][0] + lo);
    }
    cout << ans;
    return 0;
}
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