public class Main {
	public static void main(String[] args) {
	for(int i = 1;i <= 8;i++) {
		for(int j = 4;j >= 1;j--) {
			if(i * 10 + j * 20 == 100 && i != 0 && j != 0) {
				System.out.println(i + " " + j);
			}
		}
	}
}
}

/**************************************************************
	Problem: 1792
	User: admin
	Language: Java
	Result: Accepted
	Time:339 ms
	Memory:37652 kb
****************************************************************/