correct1.pi

// File: prime.pi

var limit,num,counter int;

func prime(n int) bool
{
	var i  int;
	var y bool;

	if ( n < 0 )
		result = prime(-n);
	else if (n < 2 )
		result = false;
	else if ( n == 2)
		result = true;
	else if ( n % 2 == 0 )
		result = false;
	else
	{
		i = 3; 
		isPrime = true;
		while( isPrime )
		{
			isPrime = n % i !=0;
			i = i + 2;
		}
		result = isPrime;
	}

	return result;
};

func begin()
{
	limit = readInt();
	counter = 0;
	num = 2;
	
	while(num<= limit)
	{
		if(prime(num))
		{
			counter = counter +1;
			writeInt(num);
			writeString(" ");
		}
		num = num + 1;
	}
	
	writeString("\n");
	writeString(counter);
};