Submission #881525

#	Time	Username	Problem	Language	Result	Execution time	Memory
881525		andro	Art Exhibition (JOI18_art)	C++14	0 / 100	0 ms	344 KiB

art

#include <bits/stdc++.h>
#define int long long
using namespace std;
signed main(){
    ios::sync_with_stdio(false);
    cin.tie(0);
    int n;
    cin>>n;
    vector<pair<int,int>>a(n+1);
    for(int i=1;i<=n;i++)cin>>a[i].first>>a[i].second;
    sort(a.begin()+1,a.end());
    int ans=0;
    int pref[n+1];
    pref[0]=0;
    for(int i=1;i<=n;i++)pref[i]=pref[i-1]+a[i].second;
    int suf[n+2];
    for(int i=0;i<=n+1;i++)suf[i]=0;
    for(int i=n;i>=1;i--)suf[i]=max(suf[i+1],pref[i]-a[i].first);
    for(int i=1;i<=n;i++){
        ans=max(ans,suf[i]-pref[i-1]+a[i].first);
        //for(int j=i;j<=n;j++)ans=max(ans,pref[j]-pref[i-1]-a[j].first+a[i].first);
    }
    cout<<ans;
}

• Subtask 1: 0 / 10
• Subtask 2: 0 / 20
• Subtask 3: 0 / 20
• Subtask 4: 0 / 50