Submission #541669

#	Time	Username	Problem	Language	Result	Execution time	Memory
541669		pokmui9909	Art Exhibition (JOI18_art)	C++17	100 / 100	184 ms	24780 KiB

art

#include <bits/stdc++.h>
using namespace std;
using ll = long long;

#define x first
#define y second
pair<ll, ll> A[500005];
ll S[500005];
ll N;

int main(){
    cin.tie(0) -> sync_with_stdio(false);

    cin >> N;
    for(int i = 1; i <= N; i++){
        cin >> A[i].x >> A[i].y;
    }
    sort(A + 1, A + N + 1);
    for(int i = 1; i <= N; i++){
        S[i] = S[i - 1] + A[i].y;
    }
    ll ans = 0, mv = -5e18;
    for(int i = 1; i <= N; i++){
        mv = max(mv, -S[i - 1] + A[i].x);
        ans = max(ans, S[i] - A[i].x + mv);
    }
    cout << ans;
}

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