#![allow(dead_code, deprecated, unused_variables, unused_mut)]
use std::cmp::{max, min};
use std::hash::{BuildHasher, Hash, Hasher};
struct OrderAmbivalentPair<T: Ord>(T, T);
impl<T: Ord + Hash> Hash for OrderAmbivalentPair<T> {
    fn hash<H: Hasher>(&self, hasher: &mut H) {
        min(&self.0, &self.1).hash(hasher);
        max(&self.0, &self.1).hash(hasher);
    }
}
fn main() {
    let bh = std::hash::RandomState::new();
    assert_eq!(
        bh.hash_one(OrderAmbivalentPair(1, 2)), bh.hash_one(OrderAmbivalentPair(2, 1))
    );
    assert_eq!(
        bh.hash_one(OrderAmbivalentPair(10, 2)), bh.hash_one(& OrderAmbivalentPair(2,
        10))
    );
}