Background:

The holiday and $Guan$ are very beautiful, but the homework is not beautiful. Since $FWX$ has too much homework, and $FWX$ is a student who is willing to enjoy it, so I invited $Guan$ to do it together.

Problem Description:

$FWX$'s homework has $n$ pages (both sides and back). $FWX$ can write $x$ sides every minute, and $Guan$ can write $y$ sides every minute. Because the side effects of doing homework are too strong, two people will write homework slower and slower, reduce the speed a little per minute, reduce the speed points per minute is a little more than a minute, until the speed is zero. When can they finish their homework.

Input Format:

A total of two rows, the first row of a positive integer $n$, representing the total number of pages of the job. The next row, two positive integers $x$ and $y$, represents the number of assignments written per minute by $FWX$ and $Guan$.

output format:

A positive integer indicates the time it takes two people to finish the job (in min), and can output "OUT".(Note: If the time required is small, consolidate up.)

Input / output sample:

Enter # 1:

10
4 8

output #1:

2min