Что выведет: HashSet и класс без hashCode

import java.util.*;

public class Main {
    static class P {
        final int x;
        P(int x) { this.x = x; }
        @Override public boolean equals(Object o) {
            return o instanceof P p && p.x == x;
        }
    }
    record R(int x) {}

    public static void main(String[] args) {
        List<P> list = new ArrayList<>(List.of(new P(1)));
        System.out.println(list.contains(new P(1)));
        Set<R> set = new HashSet<>(Set.of(new R(1)));
        System.out.println(set.contains(new R(1)));
        Map<P, String> map = new HashMap<>();
        P key = new P(2);
        map.put(key, "v");
        System.out.println(map.get(key));
    }
}