def main():
    x, y = map(int, input().split())
    ans = 0
    if x == 0 and y == 0:
        ans = 0
    elif abs(x) == abs(y):
        ans = 1
    elif x == 0 or y == 0:
        ans =  1
    else:
        ans = 2
    print(ans)
        

if __name__ == '__main__':
    main()