#include <iostream>
class A {
public:
A(int a) {
std::cout << "single " << a << '\n';
}
A(int a, int b) {
std::cout << "double " << a << ',' << b << '\n';
}
};
int main()
{
int aa = 5;
int bb = 6;
A a = (aa, bb);
}
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