#include <iostream>

int main( )
{
	int a=30;
	int odd=1;
	int y=1;
	int x=0;

	cout << "x" << "  " << "odd" << "  " << "y" << endl;
 
	while( y < a)
	{	cout << x << "   " << odd << "   " << y << endl;
		x = x+1;
		odd = odd+ 2;
		y = y + odd;
	}
 
	return 0;
}