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pub mod disp {
    use std::fmt;

    pub fn print<T>(text: T) where T: fmt::Display {
        println!("{}", text);
        return;
    }

    pub fn newline() {
        println!("");
        return;
    }
}

pub mod arg {
    use std::env;

    pub fn get_args() -> Vec<String> {
        return env::args().collect();
    }
}