Task
Time limit: 1000 ms,
Memory limit: 256 Mb

The butler Beylivik decided to buy an apartment. To buy an apartment, he needs to get a mortgage. He knows that he needs a loan the size of \(R\) coins. Beylivik wants to determine the overpayment at a known interest rate \(P\%\) per year and the period of  \(M\) months for which a mortgage is taken. Payment is made monthly. Mortgage payments - annuity.

Input: three numbers are sent to the program input, each from a new line - loan size - integer \(R (0 < R < 5*10^6)\), annual interest rate - real number \(P (0 < P <= 15)\) and crediting period (in months) - integer \(M ( 0 < M <= 300)\)
Output: output one number - the amount of overpayment by the end of the loan term

Example

№	Input	Output
1	5000 5 12	136.45

Prohibited statements:if;for;while;until