from math import gcd
import sys
input = sys.stdin.readline

P, Q = map(int, input().split())

def calc(p, q):
    while True:
        np, nq = p*Q+P*q, 2*q*Q
        g = gcd(np, nq)
        np //= g
        nq //= g
        if nq < Q:
            p, q = np, nq
        else:
            break
    return p, q


pl, ql = calc(1, Q)
pr, qr = calc(1, 1)
print(pl+ql+pr+qr)