Submission #1015691

#	Time	Username	Problem	Language	Result	Execution time	Memory
1015691		MetalPower	Art Exhibition (JOI18_art)	C++14	100 / 100	195 ms	29876 KiB

art

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

#define ll long long
#define pii pair<ll, ll>
#define fi first
#define se second

const ll MX = 5e5 + 10;

ll N, pref[MX];
vector<pii> vec;

int main(){
  ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
  
  cin >> N;
  for(int i = 0; i < N; i++){
    ll x, y; cin >> x >> y;
    vec.push_back({x, y});
  }
  sort(vec.begin(), vec.end());
  
  pref[0] = vec[0].se;
  for(int i = 1; i < N; i++) pref[i] = pref[i - 1] + vec[i].se;
  
  priority_queue<ll> pq;
  
  ll ans = 0;
  for(int i = N - 1; i >= 0; i--){
    pq.push(pref[i] - vec[i].fi);
    ans = max(ans, pq.top() - (i == 0 ? 0 : pref[i - 1]) + vec[i].fi);
  }
  cout << ans << '\n';
}

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