
import java.util.Scanner;

public class Main {

    public static void main(String[] args) {

     Scanner sc=new Scanner(System.in);
     int n=sc.nextInt();
     boolean flag=false;
     while(n>0)
     {
         if(n%10==7)
              flag=true;
         n/=10;

     }
     if(flag)
          System.out.println("Yes");
     else
         System.out.println("No");

    }
} import java.util.Scanner; Scanner java.util public class Main {

    public static void main(String[] args) {

     Scanner sc=new Scanner(System.in);
     int n=sc.nextInt();
     boolean flag=false;
     while(n>0)
     {
         if(n%10==7)
              flag=true;
         n/=10;

     }
     if(flag)
          System.out.println("Yes");
     else
         System.out.println("No");

    }
} Main public static void main(String[] args) {

     Scanner sc=new Scanner(System.in);
     int n=sc.nextInt();
     boolean flag=false;
     while(n>0)
     {
         if(n%10==7)
              flag=true;
         n/=10;

     }
     if(flag)
          System.out.println("Yes");
     else
         System.out.println("No");

    } main {

     Scanner sc=new Scanner(System.in);
     int n=sc.nextInt();
     boolean flag=false;
     while(n>0)
     {
         if(n%10==7)
              flag=true;
         n/=10;

     }
     if(flag)
          System.out.println("Yes");
     else
         System.out.println("No");

    } Scanner sc=new Scanner(System.in); sc new Scanner(System.in) int n=sc.nextInt(); n sc.nextInt() sc.nextInt sc boolean flag=false; flag false while(n>0)
     {
         if(n%10==7)
              flag=true;
         n/=10;

     } n>0 n 0 {
         if(n%10==7)
              flag=true;
         n/=10;

     } if(n%10==7)
              flag=true; n%10==7 n%10 n 10 7 flag=true flag true n/=10 n 10 if(flag)
          System.out.println("Yes");
     else
         System.out.println("No"); flag System.out.println("Yes") System.out.println System.out System System.out "Yes" System.out.println("No") System.out.println System.out System System.out "No" String[] args args public class Main {

    public static void main(String[] args) {

     Scanner sc=new Scanner(System.in);
     int n=sc.nextInt();
     boolean flag=false;
     while(n>0)
     {
         if(n%10==7)
              flag=true;
         n/=10;

     }
     if(flag)
          System.out.println("Yes");
     else
         System.out.println("No");

    }
} public class Main {

    public static void main(String[] args) {

     Scanner sc=new Scanner(System.in);
     int n=sc.nextInt();
     boolean flag=false;
     while(n>0)
     {
         if(n%10==7)
              flag=true;
         n/=10;

     }
     if(flag)
          System.out.println("Yes");
     else
         System.out.println("No");

    }
} Main

import java.util.Scanner;

public class Main {

    public static void main(String[] args) {

     Scanner sc=new Scanner(System.in);
     int n=sc.nextInt();
     boolean flag=false;
     while(n>0)
     {
         if(n%10==7)
              flag=true;
         n/=10;

     }
     if(flag)
          System.out.println("Yes");
     else
         System.out.println("No");

    }
}
