#![allow(dead_code, deprecated, unused_variables, unused_mut)]
use std::time::Duration;
fn main() {
    assert_eq!(
        Duration::new(0, 1).saturating_sub(Duration::new(0, 0)), Duration::new(0, 1)
    );
    assert_eq!(Duration::new(0, 0).saturating_sub(Duration::new(0, 1)), Duration::ZERO);
}