// A simple C program to calculate Euler's Totient Function 
class Program {

	// Function to return gcd of a and b
	private int gcd(int $a, int $b) {
		if($a == 0)
			return $b;
		return $this->gcd($b % $a, $a);
	}

	// A simple method to evaluate Euler Totient Function
	private int phi(int $n) {
		int $result = 1;
		for(int $i = 2; $i < $n; $i++)
			if($this->gcd($i, $n) == 1)
				$result++;
		return $result;
	}


	// Driver program to test above function
	public int main() {
		int $n;
		for($n = 1; $n <= 10; $n++)
			printf("phi(%d) = %d\n", $n, $this->phi($n));
		return 0;
	}

}