Minimum Packs Needed

You are given two integers (p) and (c) representing the number of participants and the number of colored pencils each participant requires, respectively. Each pack contains 6 colored pencils. Your task is to compute the minimum number of packs required to ensure that every participant gets at least (c) pencils. The answer is computed using the formula: [ \text{packs} = \left\lceil \frac{p \times c}{6} \right\rceil ] where (\lceil x \rceil) denotes the ceiling function, which rounds (x) up to the nearest integer.

inputFormat

A single line containing two space-separated integers (p) and (c) (with (1 \leq p, c \leq 1000)).

outputFormat

Output a single integer representing the minimum number of packs needed.## sample

10 15

25