Submission #1324961

#	Time	Username	Problem	Language	Result	Execution time	Memory
1324961		riafhasan2010	Art Exhibition (JOI18_art)	C++17	100 / 100	509 ms	43996 KiB

art

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

int main() {
  ios::sync_with_stdio(0);
  cin.tie(0);
  int n; cin >> n;
  vector<pair<ll, ll>> p(1, {0, 0});
  vector<ll> psum(n + 1, 0);
  map<ll, ll> mp;
  for (int i = 1; i <= n; i++) {
    ll a, b; cin >> a >> b;
    mp[a] += b;
  }
  for (auto [a, b] : mp) {
    p.push_back({a, b});
  }
  n = p.size() - 1;
  for (int i = 1; i <= n; i++) {
    psum[i] = p[i].second + psum[i - 1];
  }
  ll ans = 0;
  for (int i = 1, l = 1; i <= n; i++) {
    ll cur = psum[i] - psum[l - 1] - (p[i].first - p[l].first);
    ans = max(ans, cur);
    if (psum[i - 1] - psum[l - 1] < p[i].first - p[l].first) {
      l = i;
      ans = max(ans, psum[i] - psum[i - 1]);
    }
  }
  cout << ans << '\n';
}

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