Submission #68911

#	Time	Username	Problem	Language	Result	Execution time	Memory
68911		mr_banana	Roller Coaster Railroad (IOI16_railroad)	C++17	34 / 100	96 ms	9684 KiB

railroad

#include "railroad.h"
#include<bits/stdc++.h>
const int MN=16+1;
const long long inf=1e18;
long long dp[1<<MN][MN];
using namespace std;
long long plan_roller_coaster(vector<int> s, vector<int> t) {
    int n = (int) s.size();
    long long ans=inf;
    for(int i=0;i<(1<<n);i++){
        for(int j=0;j<n;j++){
            dp[i][j]=inf;
            if((i^(1<<j))==0)
            {
                dp[i][j]=0;
            }
            for(int k=0;k<n;k++){
                if((i&(1<<j)) && (i&(1<<k)) && j!=k){
                    dp[i][j]=min(dp[i][j],dp[i^(1<<j)][k]+max(0,t[k]-s[j]));
                }
            }
            if(i==((1<<n)-1)){
                ans=min(ans,dp[i][j]);
            }
        }
    }
    return ans;
}

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