Submission #330123

#	Time	Username	Problem	Language	Result	Execution time	Memory
330123		casperwang	Art Exhibition (JOI18_art)	C++14	100 / 100	215 ms	24860 KiB

art

#include <bits/stdc++.h>
#define int long long
#define pii pair<int,int>
#define ff first
#define ss second
using namespace std;

const int MAXN = 500000;
int n;
pii arr[MAXN+1];
int pre[MAXN+1];
int ans;

signed main() {
  ios_base::sync_with_stdio(0), cin.tie(0);
  cin >> n;
  for (int i = 1; i <= n; i++)
    cin >> arr[i].ff >> arr[i].ss;
  sort(arr+1, arr+1+n);
  int mmax = 0;
  for (int i = 1; i <= n; i++) {
    pre[i] = pre[i-1] + arr[i].ss;
    mmax = max(mmax, arr[i].ff - pre[i-1]);
    ans = max(ans, pre[i] - arr[i].ff + mmax);
  }
  cout << ans << "\n";
}

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