Submission #19580329

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Source Code Expand

#![allow(non_snake_case)]

use std::io::Read;

fn main() {
    let mut buf = String::new();
    std::io::stdin().read_to_string(&mut buf).unwrap();

    let answer = solve(&buf);

    println!("{}", answer);
}

fn solve(input: &str) -> String {
    let mut iterator = input.split_whitespace();

    let x: usize = iterator.next().unwrap().parse().unwrap();
    let y: usize = iterator.next().unwrap().parse().unwrap();

    if x < y {
        return x.to_string();
    }

    if x % y == 0 {
        return "-1".to_string();
    }

    return x.to_string();
}

Submission Info

Judge Result