
import java.util.Scanner;
public class Main {
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        int n = input.nextInt();
        String s = String.valueOf(n);
        for(int i=0;i<s.length();i++){
        if (s.charAt(i) == '7') {
            System.out.println("Yes");
           return;  
        }
        }
            System.out.println("No");
      
      
    }

} import java.util.Scanner; Scanner java.util public class Main {
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        int n = input.nextInt();
        String s = String.valueOf(n);
        for(int i=0;i<s.length();i++){
        if (s.charAt(i) == '7') {
            System.out.println("Yes");
           return;  
        }
        }
            System.out.println("No");
      
      
    }

} Main public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        int n = input.nextInt();
        String s = String.valueOf(n);
        for(int i=0;i<s.length();i++){
        if (s.charAt(i) == '7') {
            System.out.println("Yes");
           return;  
        }
        }
            System.out.println("No");
      
      
    } main {
        Scanner input = new Scanner(System.in);
        int n = input.nextInt();
        String s = String.valueOf(n);
        for(int i=0;i<s.length();i++){
        if (s.charAt(i) == '7') {
            System.out.println("Yes");
           return;  
        }
        }
            System.out.println("No");
      
      
    } Scanner input = new Scanner(System.in); input new Scanner(System.in) int n = input.nextInt(); n input.nextInt() input.nextInt input String s = String.valueOf(n); s String.valueOf(n) String.valueOf String n for(int i=0;i<s.length();i++){
        if (s.charAt(i) == '7') {
            System.out.println("Yes");
           return;  
        }
        } int i=0; int i=0; i 0 i<s.length() i s.length() s.length s i++ i++ i {
        if (s.charAt(i) == '7') {
            System.out.println("Yes");
           return;  
        }
        } {
        if (s.charAt(i) == '7') {
            System.out.println("Yes");
           return;  
        }
        } if (s.charAt(i) == '7') {
            System.out.println("Yes");
           return;  
        } s.charAt(i) == '7' s.charAt(i) s.charAt s i '7' {
            System.out.println("Yes");
           return;  
        } System.out.println("Yes") System.out.println System.out System System.out "Yes" return; 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 input = new Scanner(System.in);
        int n = input.nextInt();
        String s = String.valueOf(n);
        for(int i=0;i<s.length();i++){
        if (s.charAt(i) == '7') {
            System.out.println("Yes");
           return;  
        }
        }
            System.out.println("No");
      
      
    }

} public class Main {
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        int n = input.nextInt();
        String s = String.valueOf(n);
        for(int i=0;i<s.length();i++){
        if (s.charAt(i) == '7') {
            System.out.println("Yes");
           return;  
        }
        }
            System.out.println("No");
      
      
    }

} Main

import java.util.Scanner;
public class Main {
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        int n = input.nextInt();
        String s = String.valueOf(n);
        for(int i=0;i<s.length();i++){
        if (s.charAt(i) == '7') {
            System.out.println("Yes");
           return;  
        }
        }
            System.out.println("No");
      
      
    }

}
