#include <cstdint>
#include <map>
#include <unordered_map>
#include <ctime>
#include <iostream>
 
union p_t {
    p_t(int64_t c) : k(c) {}
    p_t(int32_t a, int32_t b) : x(a), y(b) {}
    int64_t k;
    struct { int32_t x, y; };
};
 
int main() {
    srand(time(0));
    std::map<decltype(p_t::k), int> m1;
    std::unordered_map<decltype(p_t::k), int> m2;
 
    p_t p = p_t(rand(), rand());
 
    m1[p.k] = rand();
    m2[p.k] = rand();
 
    p_t k1 = m1.begin()->first;
    int v1 = m1.begin()->second;
    std::cout << k1.x << " " << k1.y << " " << v1 << " : " << k1.k << std::endl;
 
    p_t k2 = m2.begin()->first;
    int v2 = m2.begin()->second;
    std::cout << k2.x << " " << k2.y << " " << v2 << " : " << k2.k << std::endl;
}

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