#include <iostream>
using namespace std;

#include <string>

// working birthday program

void Sing(string person)
{
    cout << "Happy birthday to you" << endl;
    cout << "Happy birthday to you" << endl;
    cout << "Happy birthday dear " << person << endl;
    cout << "Happy birthday to you" << endl;
    cout << endl;
}

int main()
{
    Sing("Grace");
    Sing("Alan");
    Sing("John");
    Sing("Ada");
    Sing("Blaise");
    return 0;
}