Submission #41071

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
41071	2018-02-12 11:01:58	kdh9949	Art Exhibition (JOI18_art)	C++14	100 / 100	234 ms	16396 KiB

art

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#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using pll = pair<ll, ll>;
#define X first
#define Y second
const int N = 500005;
int n;
pll a[N];
ll v[N], d[N], r;
int main(){
  ios_base::sync_with_stdio(false); cin.tie(NULL);
  cin >> n;
  for(int i = 1; i <= n; i++) cin >> a[i].X >> a[i].Y;
  sort(a + 1, a + n + 1);
  for(int i = 1; i <= n; i++) v[i] = a[i].Y - (a[i].X - a[i - 1].X);
  d[n] = v[n];
  r = a[n].Y;
  for(int i = n - 1; i >= 1; i--){
    d[i] = max(d[i + 1] + v[i], v[i]);
    r = max(r, d[i] + a[i].X - a[i - 1].X);
  }
  cout << r;
}
 
 
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• Subtask 1: 10 / 10
• Subtask 2: 20 / 20
• Subtask 3: 20 / 20
• Subtask 4: 50 / 50