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#![allow(dead_code)]
pub mod num {
    #[derive(Debug)]
    pub enum IsA {
        Positive,
        Negative,
        Zero,
    }


    impl IsA {
        pub fn n (x: i32) ->IsA{
            if x > 0 {
               IsA::Positive
            }
            else if x < 0 {
             IsA::Negative
            }
            else {
                IsA::Zero
            }
        }
    }
}