P, Q = map(int, input().split())
LR=P/Q
L = 0
R = 0
qL, pL, pR, qR = 0, 0, 0, 0
minR = 100000
maxL = 0
#for p in range(1, 2):
p=1
for q in range(1, int(Q**0.5)):
    RL = p/q
    if RL<LR:
        if RL>maxL:
            maxL = RL
            pL, qL= p, q
    else:
        if RL<minR:
            minR = RL
            pR, qR = p, q
print(pL+qL+pR+qR)