Submission #968313

#	Time	Username	Problem	Language	Result	Execution time	Memory
968313		Hugo1729	Art Exhibition (JOI18_art)	C++11	100 / 100	148 ms	24732 KiB

art

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

int main(){
    cin.tie(0)->sync_with_stdio(0);

    int n; cin >> n;
    vector<pair<ll,ll>> paint;
    for(int i=0;i<n;i++){
        ll a,b; cin >> a >> b;
        paint.push_back({a,b});
    }

    sort(paint.begin(),paint.end());

    vector<ll> prefsum(n+1,0);
    for(int i=0;i<n;i++)prefsum[i+1]=prefsum[i]+paint[i].second;

    ll ans=0;
    ll m=0;

    for(int i=0;i<n;i++){
        m=max(m,paint[i].first-prefsum[i]);
        ans=max(ans,prefsum[i+1]-paint[i].first+m);
    }

    cout << ans;

    return 0;
}

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