Untitled

def solve(array):
    if len(array) == 1:
        return 0
    if len(array) == 2:
        return 2

    left = array[:len(array)//2]
    right = array[len(array)//2:]

    ans = max(solve(left),solve(right))
    left_max = 0
    left_index = 0
    right_max = 0
    right_index = 0
    for i in range(len(left)-1,-1,-1):
        if max(left_max,int(left[i])) == int(left[i]):
            left_max = max(left_max,int(left[i]))
            left_index = i
    for i in range(0 , len(right)):
        if max(right_max,int(right[i])) == int(right[i]):
            right_max = max(right_max, int(right[i]))
            right_index = i

    ans = max(ans , right_index - left_index + 1 + len(left))
    return ans


def main():

    l = input().split()
    print(solve(l))

main()