Submission #951986

#	Time	Username	Problem	Language	Result	Execution time	Memory
951986		SaMuEl0516	Art Exhibition (JOI18_art)	C++17	100 / 100	138 ms	21160 KiB

art

#include<bits/stdc++.h>
using namespace std;
pair<long long int,long long int>a[(int)5e5+5];
int main(){
    cin.tie(0)->sync_with_stdio(0);
    int n;
    cin>>n;
    for(int i=0;i<n;i++)cin>>a[i].first>>a[i].second;
    sort(a,a+n);
    long long int pre=0,mn=0,sum=0,ans=0;
    for(int i=0;i<n;i++){
        sum+=a[i].second-a[i].first+(i?a[i-1].first:0);
        pre+=(i?a[i-1].second:0)-a[i].first+(i?a[i-1].first:0);
        mn=min(mn,pre);
        ans=max(ans,sum-mn);
    }
    cout<<ans;
}

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