#![allow(dead_code, deprecated, unused_variables, unused_mut)]
#![feature(duration_constants)]
use std::time::Duration;
fn main() {
    assert_eq!(Duration::new(0, 500_000_001).saturating_mul(2), Duration::new(1, 2));
    assert_eq!(Duration::new(u64::MAX - 1, 0).saturating_mul(2), Duration::MAX);
}