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#include <bits/stdc++.h>
using namespace std;


char A[40];
int main()
{
	int a = 1 ,b = 0;
	int n = 0;
	scanf("%s", A);
	int index = 0;
	int D = 1;
	while(A[index] != '\0')
	{
		D *= 10;
		n += A[index] - 48;
		n *= 10;
		++index;
	}
	n /= 10;

	int A = false;
	for(int i = 1; i < D*D; ++i)
	{
		
		if(a > D/10)
			A = true;
		a %= D;
		if(a % D == n && A)
		{
			printf("%d\n", i);
			return 0;
		}
		swap(a,b);
		
		a += b;
		
	}
	puts("NIE");
	return 0;
}