public class VariableNames {
	public static void main(String[] args) {
		int $ = 10;
		int _ = 20;
		int house_1 = 30;
		int house_$_$_2 = 40;		
		int INT = 5;
		int foo = 2, boo = 3, goo = foo + 2;
		foo = foo + 1;
	}
}