Submission #548391

#	Time	Username	Problem	Language	Result	Execution time	Memory
548391		AJ00	Art Exhibition (JOI18_art)	C++14	100 / 100	215 ms	24800 KiB

art

#include <bits/stdc++.h>
using namespace std;
#define int long long
const int INF = 1e18;
pair<int,int> item[500001];
int pref[500001];
signed main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    int t=1,n; 
   // cin >> t; 
    while (t--){
        cin >> n;
        for (int i = 1; i <= n; i++){
            cin >> item[i].first >> item[i].second;
        }
        sort(item+1,item+n+1);
        pref[0] = 0;
        for (int i = 1; i <= n; i++){
         //   cout << item[i].first << " " << item[i].second << "\n";
            pref[i] = pref[i-1]+item[i].second;
        }
        int minm = -INF,ans=0;
        for (int i = 1; i <= n; i++){
            minm = max(minm, item[i].first-pref[i-1]);
            ans = max(ans, minm+pref[i]-item[i].first);
           // cout << minm << " " << ans << "\n";
        }
        cout << ans << "\n";
    }
    return 0;
}

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