Submission #1150952

#	Time	Username	Problem	Language	Result	Execution time	Memory
1150952		koukirocks	Art Exhibition (JOI18_art)	C++20	100 / 100	112 ms	12112 KiB

art

#include <bits/stdc++.h>
#define speed ios_base::sync_with_stdio(0); cin.tie(0)
#define all(x) x.begin(), x.end()
#define F first
#define S second

using namespace std;
typedef long long ll;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;

const ll oo=0x3f3f3f3f3f3f3f3f;

int main() {
    speed;
    int n;
    cin>>n;
    vector<pll> pr(n+1);
    for (int i=1;i<=n;i++) {
        cin>>pr[i].F>>pr[i].S;
    }
    sort(pr.begin()+1,pr.end());
    vector<ll> pre(n+1);
    for (int i=1;i<=n;i++) pre[i]=pre[i-1]+pr[i].S;
    ll ans=-oo;
    ll mx=-oo;
    for (int i=1;i<=n;i++) {
        mx=max(pr[i].F-pre[i-1],mx);
        ans=max(ans,pre[i]-pr[i].F+mx);;
    }
    cout<<ans<<"\n";
    return 0;
}

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