Submission #947043

#	Time	Username	Problem	Language	Result	Execution time	Memory
947043		tnknguyen_	Art Exhibition (JOI18_art)	C++14	100 / 100	137 ms	21480 KiB

art

#include <bits/stdc++.h>
using namespace std;
#define int long long
#define endl '\n' 
#define pll pair<long long, long long>

const int sz = 1e6 + 5;
pll a[sz];
int n;

int32_t main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);

    //freopen("main.inp","r",stdin);
    //freopen("main.out","w",stdout);

    cin >> n;
    for(int i=1;i<=n;++i){
        cin>>a[i].first>>a[i].second;
    }
    sort(a+1, a+n+1);

    // S - (A_max - Amin) <-> S - A_max + A_min
    long long ans = 0;
    long long best = 0;
    for(int i=1;i<=n;++i){
        best += a[i].second;
        best = max(best, a[i].first + a[i].second); //start with new painting
        ans = max(ans, best - a[i].first);
    }   

    cout<<ans;
    return 0;
}

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