# coding: utf-8
# Your code here!
import sys
read = sys.stdin.read
readline = sys.stdin.readline

x,y = map(int,readline().split())

v = 4*(x*x+y*y)
ng = 0
ok = 10**9
while ok-ng > 1:
    mid = (ok+ng)//2
    if mid**2 > v:
        ok = mid
    else:
        ng = mid
print(ok)