public class Ex030105{
	public static void main(String[] args){
		one:
		for (int i=0; i<3; i++){
			two:
			for (int j=10; j<30; j+=10){
				System.out.println(i+j);
				if (i>1)
					continue one;
			}
		}
	}
}


/*
 10
 20
 11
 21
 12
*/