#![allow(dead_code, deprecated, unused_variables, unused_mut)]
use std::cmp;
fn main() {
    let result = cmp::max_by_key(3, -2, |x: &i32| x.abs());
    assert_eq!(result, 3);
    let result = cmp::max_by_key(1, -2, |x: &i32| x.abs());
    assert_eq!(result, - 2);
    let result = cmp::max_by_key(1, -1, |x: &i32| x.abs());
    assert_eq!(result, - 1);
}