#int(input())
#map(int, input().split())
#list(map(int, input().split()))

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

def xgcd(a,b):
    prevx, nextx = 1, 0
    prevy, nexty = 0, 1
    while b:
        quotient = a//b
        nextx, prevx = prevx - quotient * nextx, nextx
        nexty, prevy = prevy - quotient * nexty, nexty
        a, b = b, a % b
        # print(a,b)
    return prevx, prevy,a

x, y, g = xgcd(P, -Q)

a, b = divmod(x, Q)
x -= Q * a
y -= P * a

mx = Q - x
my = P - y

print(x + y + mx + my)