import java.util.*;

public class Main {
   public static void main(final String[] args) {
      final Scanner sc = new Scanner(System.in);

      final int n = sc.nextInt();

      if (n % 10 == 7) {
         System.out.println("Yes");
      }
      else if ((n / 10) % 10 == 7) {
         System.out.println("Yes");
      }
      else if (n / 100 == 07){
         System.out.println("Yes");
      }
      else {
         System.out.println("No");
      }
   }
} import java.util.*; util.* java public class Main {
   public static void main(final String[] args) {
      final Scanner sc = new Scanner(System.in);

      final int n = sc.nextInt();

      if (n % 10 == 7) {
         System.out.println("Yes");
      }
      else if ((n / 10) % 10 == 7) {
         System.out.println("Yes");
      }
      else if (n / 100 == 07){
         System.out.println("Yes");
      }
      else {
         System.out.println("No");
      }
   }
} Main public static void main(final String[] args) {
      final Scanner sc = new Scanner(System.in);

      final int n = sc.nextInt();

      if (n % 10 == 7) {
         System.out.println("Yes");
      }
      else if ((n / 10) % 10 == 7) {
         System.out.println("Yes");
      }
      else if (n / 100 == 07){
         System.out.println("Yes");
      }
      else {
         System.out.println("No");
      }
   } main {
      final Scanner sc = new Scanner(System.in);

      final int n = sc.nextInt();

      if (n % 10 == 7) {
         System.out.println("Yes");
      }
      else if ((n / 10) % 10 == 7) {
         System.out.println("Yes");
      }
      else if (n / 100 == 07){
         System.out.println("Yes");
      }
      else {
         System.out.println("No");
      }
   } final Scanner sc = new Scanner(System.in); sc new Scanner(System.in) final int n = sc.nextInt(); n sc.nextInt() sc.nextInt sc if (n % 10 == 7) {
         System.out.println("Yes");
      }
      else if ((n / 10) % 10 == 7) {
         System.out.println("Yes");
      }
      else if (n / 100 == 07){
         System.out.println("Yes");
      }
      else {
         System.out.println("No");
      } n % 10 == 7 n % 10 n 10 7 {
         System.out.println("Yes");
      } System.out.println("Yes") System.out.println System.out System System.out "Yes" if ((n / 10) % 10 == 7) {
         System.out.println("Yes");
      }
      else if (n / 100 == 07){
         System.out.println("Yes");
      }
      else {
         System.out.println("No");
      } (n / 10) % 10 == 7 (n / 10) % 10 (n / 10) n 10 10 7 {
         System.out.println("Yes");
      } System.out.println("Yes") System.out.println System.out System System.out "Yes" if (n / 100 == 07){
         System.out.println("Yes");
      }
      else {
         System.out.println("No");
      } n / 100 == 07 n / 100 n 100 07 {
         System.out.println("Yes");
      } System.out.println("Yes") System.out.println System.out System System.out "Yes" {
         System.out.println("No");
      } System.out.println("No") System.out.println System.out System System.out "No" final String[] args args public class Main {
   public static void main(final String[] args) {
      final Scanner sc = new Scanner(System.in);

      final int n = sc.nextInt();

      if (n % 10 == 7) {
         System.out.println("Yes");
      }
      else if ((n / 10) % 10 == 7) {
         System.out.println("Yes");
      }
      else if (n / 100 == 07){
         System.out.println("Yes");
      }
      else {
         System.out.println("No");
      }
   }
} public class Main {
   public static void main(final String[] args) {
      final Scanner sc = new Scanner(System.in);

      final int n = sc.nextInt();

      if (n % 10 == 7) {
         System.out.println("Yes");
      }
      else if ((n / 10) % 10 == 7) {
         System.out.println("Yes");
      }
      else if (n / 100 == 07){
         System.out.println("Yes");
      }
      else {
         System.out.println("No");
      }
   }
} Main
import java.util.*;

public class Main {
   public static void main(final String[] args) {
      final Scanner sc = new Scanner(System.in);

      final int n = sc.nextInt();

      if (n % 10 == 7) {
         System.out.println("Yes");
      }
      else if ((n / 10) % 10 == 7) {
         System.out.println("Yes");
      }
      else if (n / 100 == 07){
         System.out.println("Yes");
      }
      else {
         System.out.println("No");
      }
   }
}