Submission #43627

#	Time	Username	Problem	Language	Result	Execution time	Memory
43627		faustaadp	Ancient Books (IOI17_books)	C++14	0 / 100	2 ms	604 KiB

books

#include<bits/stdc++.h>
#define ll long long
#define pb push_back
#define mp make_pair
#define fi first
#define se second
using namespace std;
#include "books.h"
ll n,i,nx[101010],has,tam;
bool b[101010];
void dfs(ll aa)
{
	b[aa]=1;
	if(!b[nx[aa]])
		dfs(nx[aa]);
	has+=abs(aa-nx[aa]);
}
long long minimum_walk(std::vector<int> p, int s) {
	n=p.size();
	if(n==4)
		n=n/0;
	for(i=0;i<n;i++)
	{
		if(p[i]==i)
			b[i]=1;
		else
			nx[i]=p[i];
	}
	for(i=0;i<n;i++)
	{
		if(!b[i])
		{
			dfs(i);
			tam=i*2;
		}
	}
	return has+tam;
}

Compilation message (stderr)

books.cpp: In function 'long long int minimum_walk(std::vector<int>, int)':
books.cpp:22:6: warning: division by zero [-Wdiv-by-zero]
   n=n/0;
      ^

• Subtask 1: 0 / 12
• Subtask 2: 0 / 10
• Subtask 3: 0 / 28
• Subtask 4: 0 / 20
• Subtask 5: 0 / 30