import math

inputs = list(map(int, input().split()))
persons = inputs[0]
kim = inputs[1]
im = inputs[2]

bind_num = 2
bind_start = 1
count = 1
success_flag = False

while True:

    for _ in range(int(math.ceil(persons/bind_num))):
        _list = []
        for inner_loop in range(bind_start, bind_start+bind_num):
            _list.append(inner_loop)

        if kim in _list and im in _list:
            success_flag = True
            break

        bind_start += bind_num

    if success_flag:
        break

    bind_start = 1
    bind_num *= 2
    count += 1

print(count)