#![allow(dead_code, deprecated, unused_variables, unused_mut)]
#![feature(duration_constants)]
use std::time::Duration;
fn main() {
    assert_eq!(
        Duration::new(0, 0).saturating_add(Duration::new(0, 1)), Duration::new(0, 1)
    );
    assert_eq!(
        Duration::new(1, 0).saturating_add(Duration::new(u64::MAX, 0)), Duration::MAX
    );
}