#include <stdio.h>
#include <stdlib.h>
#include <conio.h>

int main()
{
	FILE *f, *o;
	f = fopen("dreptunghi.in", "r");
	o = fopen("dreptunghi.out", "w");
	int n, m, moves, k, i;
	fscanf_s(f, "%d %d", &m, &n);

	if (n > m)
	{
		k = n;
		n = m;
		m = k;
	}


	if (n == m)
		moves = n;
	else if (m % n == 0)
		moves = m;
	else
	{
		moves = n;
		k = m - n;
		for (i = 1; i <= k; i++)
			moves += (n / k);
		if (n%k!=0)
			moves += k;
	}

	fprintf(o, "%d", moves);
	_getch();

	fclose(f);
	fclose(o);
	return 0;
}