#![allow(dead_code, deprecated, unused_variables, unused_mut)]
fn main() {
    assert_eq!(1u8.overflowing_sub_signed(2), (u8::MAX, true));
    assert_eq!(1u8.overflowing_sub_signed(- 2), (3, false));
    assert_eq!((u8::MAX - 2).overflowing_sub_signed(- 4), (1, true));
}