1056: 幸运数字
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
Scanner cin = new Scanner(System.in);int m=cin.nextInt();int n=cin.nextInt();for(int i=n;i>=m;i--){
if(i%7==0&&i%4!=0){
System.out.println(i);return ;}}System.out.println("no");}
}