Submission #1094329

#	Time	Username	Problem	Language	Result	Execution time	Memory
1094329		blacktulip	Art Exhibition (JOI18_art)	C++17	0 / 100	128 ms	262144 KiB

art

#include <bits/stdc++.h>

using namespace std;

typedef long long lo; 

#define fi first
#define se second
#define endl "\n"
#define pb push_back
#define int long long
#define fio() ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL)
#define FOR for(int i=1;i<=n;i++)
#define mid ((start+end)/2)
#define ort ((bas+son)/2)
#define _ << " " <<

const lo inf = 1000000000;
const lo li = 505;
const lo mod = 1000000007;

int n,m,a[li],k,flag,t,b[li],dp[li][li][li];
int cev;
string s;
vector<int> v;

inline int f(int i,int maxi,int mini){
	int cevap=0;
	if(i>n)return -(a[maxi]-a[mini]);
	if(~dp[i][maxi][mini])return dp[i][maxi][mini];
	cevap=max(cevap,f(i+1,maxi,mini));
	int tmax=maxi;
	if(maxi==0 || a[i]>a[maxi])tmax=i;
	int tmin=mini;
	if(mini==0 || a[i]<a[mini])tmin=i;
	cevap=max(cevap,f(i+1,tmax,tmin)+b[i]);
	return dp[i][maxi][mini]=cevap;
}

int32_t main(void){
	fio();
	cin>>n;
	memset(dp,-1,sizeof(dp));
	for(int i=1;i<=n;i++){
		cin>>a[i]>>b[i];
	}
	cout<<f(1,0,0)<<endl;
	return 0;
}

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