"""

"""

import sys
from sys import stdin

N,K = map(int,stdin.readline().split())

if (1+N) * N // 2 == K:
    print (0)

else:

    rem = (1+N)*N//2 - K

    s = set()
    s.add(0)

    ns = 0
    for i in range(1,N+1):
        ns += i

        if ns-rem in s:
            print (1)
            sys.exit()

        s.add(ns)

    print (2)