Submission #115967

#	Time	Username	Problem	Language	Result	Execution time	Memory
115967		oolimry	Art Exhibition (JOI18_art)	C++14	100 / 100	360 ms	24828 KiB

art

#include <bits/stdc++.h>

using namespace std;

int main()
{
    //freopen("i.txt","r",stdin);
    ios_base::sync_with_stdio(false);
    cin.tie(0);

    int n;
    cin >> n;

    typedef pair<long long, long long> ii;
    ii arr[n];
    for(int i = 0;i < n;i++){
        cin >> arr[i].first >> arr[i].second;
    }
    sort(arr,arr+n);
    long long pre[n];
    pre[0] = arr[0].second;
    for(int i = 1;i < n;i++){
        pre[i] = pre[i-1] + arr[i].second;
    }
    long long maxv = 0ll;
    long long ans = 0ll;
    for(int i = 0;i < n;i++){
        ans = max(ans, arr[i].second);

        ans  = max(pre[i] - arr[i].first + maxv, ans);
        long long v = arr[i].first;
        if(i != 0) v -= pre[i-1];
        maxv = max(maxv, v);
    }

    cout << ans;

    return 0;
}

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