Takahashi has a deposit of 100 yen (the currency of Japan) in AtCoder Bank.  The bank pays an annual interest rate of 1 % compounded annually. (A fraction of less than one yen is discarded.)  Assuming that nothing other than the interest affects Takahashi's balance, in how many years does the balance reach X yen or above for the first time?
s=100
x=int(input())
i=0
while True:
  if s>=x:
    break
  s=s*1.01
  i=i+1
  
s=100
i=0
x=int(input())
 
while True:
  if s>=x:
    break
  else:
    i=i+1
    s=int(s*1.01)
    
print(i)