1%

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?

Constraints

• 101 \le X \le 10^{18}
• All values in input are integers.

Input

Input is given from Standard Input in the following format:

X

Output

Print the number of years it takes for Takahashi's balance to reach X yen or above for the first time.

Examples

Input

103

Output

3

Input

1000000000000000000

Output

3760

Input

1333333333

Output

1706

inputFormat

input are integers.

Input

Input is given from Standard Input in the following format:

X

outputFormat

Output

Print the number of years it takes for Takahashi's balance to reach X yen or above for the first time.

Examples

Input

103

Output

3

Input

1000000000000000000

Output

3760

Input

1333333333

Output

1706

样例

1333333333

1706