a, b = map(int, input().split())
azi = a
ebi_sara = a
ebi = b
azi_sara = b
t = azi_sara + ebi_sara
ans = 100 + 1
for i in range(azi+1):
    if azi_sara - i < 0:
        break
    n = azi_sara - i # 不自然な皿の枚数(アジ)
    m = ebi_sara - i # 不自然な皿の枚数(エビ)
    res = t - (n + m)# 自然な皿の枚数
    ans = min(ans, abs(res-(n+m)))
print(ans)