Submission #283179

#	Time	Username	Problem	Language	Result	Execution time	Memory
283179		MohamedAhmed04	Ancient Books (IOI17_books)	C++14	Compilation error	0 ms	0 KiB

books

#include <bits/stdc++.h>
#include "books.h"
#include "grader.cpp"

using namespace std ;

const int MAX = 1e6 + 10 ;

int n ;

int to[MAX] ;
int vis[MAX] ;
long long cost[MAX] ;

long long dfs(int node)
{
	if(vis[node])
		return 0ll ;
	vis[node] = 1 ;
	return (dfs(to[node]) + abs(to[node] - node)) ;
}

long long minimum_walk(std::vector<int> p, int s) 
{
	n = p.size() ;
	for(int i = 0 ; i < n ; ++i)
		to[i] = p[i] ;
	for(int i = 0 ; i < n ; ++i)
	{
		if(vis[i])
			continue ;
		cost[i] = dfs(i) ;
	}
	long long ans = 0 ;
	for(int i = 0 ; i < n ; ++i)
		ans += cost[i] ;
	for(int i = n-1 ; i >= 0 ; --i)
	{
		if(cost[i])
			ans += i * 2ll ;
	}
	return ans ;
}

Compilation message (stderr)

/tmp/ccu1k8P1.o: In function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'
/tmp/cccuDd64.o:books.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status