#include <iostream>
#include <print>
#if __cplusplus < 202302L
#error C++23 is required.
#endif
int main() {
    std::println("C++23 | GCC {}", __VERSION__);
    std::cout << "Input two integers: " << std::flush;
    long long a, b;
    if (!(std::cin >> a >> b)) return 1;
    std::println("SUM = {}", a + b);
}