EIU Programming Practices and Exams

Nam has a passbook (sổ tiết kiệm) of X VND with an interest rate of r1% per year and a term of n months. Interest is calculated at the end of the term. After m months (m < n), Nam wants to withdraw money from the passbook to build a house. After researching, Nam has discovered two options:

-                      Option 1: settle the passbook and receive only the full principal amount.

-                      Option 2: Use the passbook as collateral (passbook loan) to borrow money from a bank with a value of Y VND and an interest rate of r2% per year. Interest is calculated annually (if n – m ≥ 12), or until the passbook is settled at month n. Note that in this case, Nam will use all amount of money he receives from his passbook after month n to pay off this loan.

Calculate the maximum amount of money Nam can withdraw from the passbook (X) or borrow from the bank (Y).

Input

The only line contains 3 integers X, n and m, followed by 2 real numbers r1 and r2 (0 < X ≤ 10¹⁵, 0 < m < n ≤ 300, 0 < r1, r2 ≤ 20).

Output

The maximum amount of money (rounded to unit).

Sample