#define _CRT_SECURE_NO_WARNINGS

#include <stdio.h>


int abs(int x)
{
	if (x > 0)
		return x;
	else
		return -x;
}
int main()
{
	freopen("inversmodular.in", "r", stdin);
	//freopen("inversmodular.out", "w", stdout);

	int a, n, x;
	scanf("%d%d", &a, &n);

	int dif = abs(a - n);
	int one = a % n;
	int two = (2 * a) % n;

	if (one < two)
	{
		 
	}
}