Submission #1306417

#	Time	Username	Problem	Language	Result	Execution time	Memory
1306417		baodat	Art Exhibition (JOI18_art)	C++20	100 / 100	126 ms	12108 KiB

art

#include <bits/stdc++.h>
using namespace std;
#define ll long long 
#define FOR(i, l, r) for(int i = l; i <= r; i++)
#define FORD(i, l, r) for(int i = l; i >= r; i--)
#define all(x) (x).begin(), (x).end()

signed main(){
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  int n;
  cin >> n;
  vector<pair<ll, ll>> a(n + 1);
  FOR(i, 1, n) cin >> a[i].first >> a[i].second;
  sort(a.begin() + 1, a.end());
  vector<ll> pref(n + 1, 0);
  FOR(i, 1, n) pref[i] = pref[i - 1] + a[i].second;
  ll ans = 0, cand = 0;
  FOR(r, 1, n){
    ll cur_cand = a[r].first - pref[r - 1];
    cand = max(cand, cur_cand);
    ans = max(ans, pref[r] - a[r].first +  cand);
  }
  cout << ans << "\n";
  return 0;
}

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