Calculate Final Bills

You are given the bills of several customers along with their loyalty status. For each customer, if the bill amount is greater than a threshold \(k\), a primary discount of \(d_1\)% is applied. Furthermore, if the customer is a loyalty member, an additional loyalty discount of \(d_2\)% is applied to the resulting amount. All computations should be done using the following formulas:

If \(b > k\):

\[ \text{bill} = b \times \left(1 - \frac{d_1}{100}\right) \]

If the customer is loyal (flag equals 1):

\[ \text{bill} = \text{bill} \times \left(1 - \frac{d_2}{100}\right) \]

Each final bill amount should be rounded to two decimal places.

inputFormat

The input is read from STDIN and has the following format:

n k d1 d2
bill1 is_loyal1
bill2 is_loyal2
... 
billn is_loyaln

Where:

• n is the number of customers.
• k is the threshold amount for the primary discount.
• d1 is the primary discount percentage.
• d2 is the loyalty discount percentage.
• Each subsequent line contains a floating-point number bill representing the bill amount, and an integer is_loyal (either 0 or 1) indicating the loyalty status.

outputFormat

For each customer, output the final bill amount on a separate line to STDOUT, rounded to two decimal places.

## sample

1 100 10 0
120.00 0

108.00

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