N = int(input())
m = N
count = 0
if m%2 == 0:
    count += 1
    while m%2 == 0:
        m //= 2
#print(m, count)

if m == 1:
    print(count)
    exit()

mn_gap = 10**20
for d in range(1, 32):
    power = pow(2, d)
    k = (power-1)//m
    if k > 0:
        gap = power - (k*m+1)
        mn_gap = min(mn_gap, gap)
        #print('d', d, 'mn_gap', mn_gap, gap, k)

count += mn_gap +2
print(count)