def extGCD(a,b):#ax + by = gcd(a,b)->return (x,y)
    x, y, u, v = 1, 0, 0, 1
    while b:
        k = a // b
        x -= k * u
        y -= k * v
        x, u = u, x
        y, v = v, y
        a, b = b, a % b
    return x, y
P,Q = map(int,input().split())
x,y = extGCD(P,Q)
m = (-x//Q) + 1
ql = x + Q * m
pl = -(y-P*m)
x,y = extGCD(Q,P)
m = (-x//P) + 1
pr = x + P * m
qr = -(y-Q * m)
print(pl+ql+ pr+qr)