Submission #423527

#	Time	Username	Problem	Language	Result	Execution time	Memory
423527		vanic	Roller Coaster Railroad (IOI16_railroad)	C++14	34 / 100	55 ms	8996 KiB

railroad

#include "railroad.h"
#include <algorithm>
#include <cmath>
#include <vector>
#include <iostream>

using namespace std;
typedef long long ll;

const int maxn=17;
const ll inf=1e18;

int n;
ll dp[(1<<maxn)][maxn];


ll plan_roller_coaster(vector < int > s, vector < int > t){
	n=s.size();
	int x;
	for(int i=1; i<(1<<n); i++){
		for(int j=0; j<n; j++){
			if(i&(1<<j)){
				dp[i][j]=inf;
				x=i^(1<<j);
				if(!x){
					dp[i][j]=0;
				}
				for(int k=0; k<n; k++){
					if(x&(1<<k)){
						dp[i][j]=min(dp[i][j], dp[x][k]+max(0, t[k]-s[j]));
					}
				}
			}
		}
	}
	ll mini=inf;
	for(int i=0; i<n; i++){
		mini=min(mini, dp[(1<<n)-1][i]);
	}
	return mini;
}

• Subtask 1: 11 / 11
• Subtask 2: 23 / 23
• Subtask 3: 0 / 30
• Subtask 4: 0 / 36