Submission #600356

#	Time	Username	Problem	Language	Result	Execution time	Memory
600356		amin	Roller Coaster Railroad (IOI16_railroad)	C++14	11 / 100	2073 ms	6744 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];
void tr(vector<long>v)
{
   // 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);
}
void rec(long o,vector<long>v)
{
    if(o==n)
    {
        tr(v);
        return ;
    }
    vector<long>p=v;
    sort(p.begin(),p.end());
    long r=0;
    for(long i=0;i<n;i++)
    {
        if(r==p.size())
        {



        v.push_back(i);
        rec(o+1,v);
        v.pop_back();
        continue;
        }
        if(p[r]==i)
        {
            r++;
            continue;
        }

        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:36:13: warning: comparison of integer expressions of different signedness: 'long int' and 'std::vector<long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   36 |         if(r==p.size())
      |            ~^~~~~~~~~~

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