제출 #763901

#제출 시각아이디문제언어결과실행 시간메모리
763901ind1vArt Exhibition (JOI18_art)C++11
100 / 100
170 ms24704 KiB
#include <bits/stdc++.h> using namespace std; const int N = 500005; int n; long long a[N]; int b[N]; long long p[N]; int ord[N]; int main() { ios::sync_with_stdio(false); cin.tie(0); cin >> n; for (int i = 1; i <= n; i++) { cin >> a[i] >> b[i]; } iota(ord + 1, ord + n + 1, 1); sort(ord + 1, ord + n + 1, [](int &i, int &j) -> bool { return a[i] < a[j]; }); for (int i = 1; i <= n; i++) { p[i] = b[ord[i]] + p[i - 1]; } long long mx = numeric_limits<long long>::min(); long long ans = numeric_limits<long long>::min(); for (int i = 1; i <= n; i++) { mx = max(mx, a[ord[i]] - p[i - 1]); ans = max(ans, p[i] - a[ord[i]] + mx); } cout << ans; return 0; }
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