using std := cpp("WideLibrary/test.h").std;
Main() {
    vec := std.vector!(int8)();
    fun := sample();
    fun.y = true;
    vec.push_back(5);
    vec.push_back(6);
    std.sort(vec.begin(), vec.end(), fun.choice);
}
type sample {
    y := bool();
    choice(int8 lhs, int8 rhs) {
        std.cout << y;
        return y;
    }
}