n = int(input())
t = 9
ans = -1

lef = 0
rig = 1000

while rig - lef > 1:
    mid = (lef + rig) // 2
    rep = pow(10, mid) 
    if rep * rep < n:
        lef = mid
    else:
        rig = mid
    print(lef, rig)


print(rig)