Determine Number Sign

Given an integer \(N\), determine whether it is positive, negative, or zero.

If \(N > 0\), output positive; if \(N = 0\), output zero; and if \(N < 0\), output negative.

inputFormat

The input consists of a single integer \(N\).

outputFormat

Output one of the following strings: positive, zero, or negative.

sample

10

positive