Submission #1106761

#	Time	Username	Problem	Language	Result	Execution time	Memory
1106761		vjudge1	Art Exhibition (JOI18_art)	C++17	100 / 100	131 ms	13128 KiB

art

#include <bits/stdc++.h>

using namespace std;

#define int long long
typedef pair<int, int> ii;

const int N = 5e5 + 5,
          INF = 1e9;

int n, dp[N], pref[N];
ii a[N];

int32_t main(){
  cin.tie(0)->sync_with_stdio(0);
//  #define task "test"
//  if(fopen(task ".inp", "r")){
//    freopen(task ".inp", "r", stdin);
//    freopen(task ".out", "w", stdout);
//  }
  cin >> n;
  for(int i = 1; i <= n; i++) cin >> a[i].first >> a[i].second;

  sort(a + 1, a + n + 1);
  for(int i = 1; i <= n; i++) pref[i] = pref[i - 1] + a[i].second;

  int res = 0, d = a[1].first - pref[0];
  for(int i = 2; i <= n; i++){
    res = max(res, pref[i] - a[i].first + d);
    d = max(d, a[i].first - pref[i - 1]);
  }
  for(int i = 1; i <= n; i++) res = max(res, a[i].second);
  cout << res << "\n";

  return 0;
}

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