Submission #1026233

#	Time	Username	Problem	Language	Result	Execution time	Memory
1026233		vanea	Art Exhibition (JOI18_art)	C++17	100 / 100	152 ms	25016 KiB

art

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

const ll NINF = -1e18;

int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int n;
    cin >> n;
    vector<array<ll, 2>> v(n+1);
    vector<ll> pref(n+1);
    for(int i = 1; i <= n; i++) {
        cin >> v[i][0] >> v[i][1];
    }
    sort(v.begin(), v.end());
    ll prev = v[n][1] - v[n][0], ans = v[n][1];
    for(int i = n-1; i > 0; i--) {
        ll curr = prev+v[i][1];
        ll k = v[i][1]-v[i][0];
        if(curr > k) {
            prev = curr;
            ans = max(ans, curr + v[i][0]);
        }
        else {
            prev = k;
            ans = max(ans, k + v[i][0]);
        }
    }
    cout << ans;
    return 0;
}

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