제출 #1257536

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1257536		ykc0606	Art Exhibition (JOI18_art)	C++20	100 / 100	119 ms	23880 KiB

art

#include <bits/stdc++.h>
#define int long long 
#define N 500001
using namespace std;
const int inf=1e18;
int32_t main(){
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	cout.tie(NULL); 
	
	int n;
	cin >> n;
	int a[n+1],b[n+1];
	vector<pair<int,int>> v(n+1);
	for(int i=1;i<=n;i++){
		cin >> a[i] >> b[i];
		v[i].first=a[i];
		v[i].second=b[i];
	}
	sort(v.begin(),v.end());
	for(int i=1;i<=n;i++){
		a[i]=v[i].first;
		b[i]=v[i].second;
	}
	/*
	for(int i=1;i<=n;i++){
		cout << a[i] << " " << b[i] << "\n";
	}
	*/
	int dp[N][2];
	memset(dp,0,sizeof(dp));
	int ans=-inf;
	for(int i=1;i<=n;i++){
		dp[i][1]=max(dp[i][1],dp[i-1][0]+a[i]+b[i]);
		dp[i][1]=max(dp[i][1],dp[i-1][1]+b[i]);
		ans=max(ans,dp[i][1]-a[i]);
	}
	cout << ans << "\n";
	return 0;
}

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