Submission #600359

#	Time	Username	Problem	Language	Result	Execution time	Memory
600359		amin	Roller Coaster Railroad (IOI16_railroad)	C++14	11 / 100	2087 ms	6720 KiB

railroad

#include "railroad.h"
#include<bits/stdc++.h>

using namespace std;

long long n,m;
long long an=1e18;
long long a[20],b[20],j[20];
void tr(vector<long>v)
{
    for(long i=0;i<n;i++)
    {
        j[i]=0;
    }
    for(long i=0;i<n;i++)
    {
        j[v[i]]++;
        if(j[v[i]]>1)
            return ;
    }

   // cout<<v.size()<<endl;
    long long sum=0;
    for(long i=0;i<n-1;i++)
    {
        if((b[v[i]]-a[v[i+1]])>0)
        {
          //  cout<<a[v[i]]<<' '<<b[v[i+1]]<<endl;
            sum+=(b[v[i]]-a[v[i+1]]);
        }
    }
   // cout<<endl;
    an=min(an,sum);
    return ;
}
void rec(long o,vector<long>v)
{
    if(o==n)
    {
        tr(v);
        return ;
    }

    long r=0;
    for(long i=0;i<n;i++)
    {

        v.push_back(i);
        rec(o+1,v);
        v.pop_back();

    }
    return ;
}
long long plan_roller_coaster(std::vector<int> s, std::vector<int> t) {
     n =  s.size();
     m=t.size();
    for(long i=0;i<n;i++)
    {
        a[i]=s[i];
    }
    for(long i=0;i<n;i++)
    {
        b[i]=t[i];
    }
    rec(0,{});
    return an;
}

Compilation message (stderr)

railroad.cpp: In function 'void rec(long int, std::vector<long int>)':
railroad.cpp:44:10: warning: unused variable 'r' [-Wunused-variable]
   44 |     long r=0;
      |          ^

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