Submission #206003

#	Time	Username	Problem	Language	Result	Execution time	Memory
206003		oko	Roller Coaster Railroad (IOI16_railroad)	C++14	11 / 100	2090 ms	7032 KiB

railroad

#include "railroad.h"
#include <cstdio>
#include <cassert>
#include<bits/stdc++.h>
using namespace std;
long long n,ans=1e18,sum;
vector<int>en,ex;
void f(int mask,long long sp)
{
    if(mask==(1<<n)-1)ans=min(ans,sum);
    for(int i=0;i<n;i++)
    {
        if((mask&(1<<i))==0)
        {
            long long dis=max(0ll,sp-en[i]);
            sum+=dis;
            f(mask|(1<<i),ex[i]);
            sum-=dis;
        }
    }
}
long long plan_roller_coaster(std::vector<int> s, std::vector<int> t)
{
    n=s.size();
    en=s;
    ex=t;
    f(0,1);
    return ans;
}

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