Submission #223028

#	Time	Username	Problem	Language	Result	Execution time	Memory
223028		DavidDamian	Roller Coaster Railroad (IOI16_railroad)	C++11	11 / 100	2090 ms	10616 KiB

railroad

#include "railroad.h"
#include<bits/stdc++.h>
///Subtask 1
using namespace std;
typedef long long ll;
ll sum=0;
ll minimum=LLONG_MAX;
int n;
ll cost[16][16];
int taken[16];
void recursion(int k,int last)
{
    if(k==n){
        minimum=min(minimum,sum);
        return;
    }
    for(int i=0;i<n;i++){
        if(taken[i]) continue;
        taken[i]=1;
        sum+=cost[last][i];
        recursion(k+1,i);
        taken[i]=0;
        sum-=cost[last][i];
    }
}
long long plan_roller_coaster(vector<int> s, vector<int> t) {
    n=s.size();
    for(int i=0;i<n;i++){
        for(int j=0;j<n;j++){
            if(j==i) continue;
            cost[i][j]=max(0,t[i]-s[j]);
        }
    }
    recursion(0,n);
    return minimum;
}

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