#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>

#define READ_BUFSIZE ( 1024 )
#define READ_DELIMITER ( " " )


int main(int argc, char *argv[]) 
{

	int X = 0;
	int Y = 0;
	scanf("%d %d", &X, &Y);

	double R = X*X + Y*Y;
	R = sqrt (R);
	R *= 2;

	int r = R;
	if (r <= R)
		r++;


	printf("%d\n", r);

	return 0;

}