Bank Loan 1

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Gửi bài giải

Điểm: 1,00 (OI)
Giới hạn thời gian: 1.0s
Giới hạn bộ nhớ: 256M
Input: stdin
Output: stdout

Dạng bài
Ngôn ngữ cho phép
C, C++, Java, Kotlin, Pascal, PyPy, Python, Scratch

Mr. Huy wants to buy a new house worth X VND, so he decided to take out a bank loan with an interest rate of r% per year. He calculates that he could pay a maximum of Y VND per month (includes principal and interest). How long would he pay off his loan?

Input

The only line contains 2 integers X, Y and a real number r (0 < X, Y < 10^12, 0 < r ≤ 100).

Output

A number indicating which month he pays off his loan.

Example

Input
1000000000 100000000 6
Output
11
Input
500000000 100000000 6.2
Output
6

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