x = [ 
	[ 1 , 2 , 3 ] , 
	[ 4 , 5 , 6 ] , 
	[ 7 , 8 , 9 ] 
    ]

for i in ( 0..2 ) do
	for j in ( 0..2 ) do
		if i == j then
			printf( "%d " , x[ i ][ j ] );
		else
			printf( "0 " );
		end
	end
	printf( "\n" );
end