Submission #129839

#	Time	Username	Problem	Language	Result	Execution time	Memory
129839		nandonathaniel	Roller Coaster Railroad (IOI16_railroad)	C++14	34 / 100	79 ms	10744 KiB

railroad

#include "railroad.h"
#include<bits/stdc++.h>
using namespace std;
typedef long long LL;
const LL INF=1e18;
LL dp[(1<<16)][16];


long long plan_roller_coaster(vector<int> s, vector<int> t) {
    int n = (int) s.size();
	for(LL i=0;i<(1<<n);i++){
		for(LL j=0;j<n;j++){
			dp[i][j]=INF;
		}
	}
    for(LL i=0;i<n;i++)dp[(1<<i)][i]=0;
    for(LL i=0;i<(1<<n);i++){
    	for(LL j=0;j<n;j++){
    		if(i & (1<<j)){
    			for(LL k=0;k<n;k++){
    				if(!(i & (1<<k))){
    					dp[i+(1<<k)][k]=min(dp[i+(1<<k)][k],dp[i][j]+max(t[k]-s[j],0));
					}
				}
			}
		}
	}
	LL ans=INF;
	for(LL i=0;i<n;i++)ans=min(ans,dp[(1<<n)-1][i]);
    return ans;
}

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