import java.util.Scanner;

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

        System.out.println(N.contains("7") ? "Yes" : "No");
    }
} import java.util.Scanner; Scanner java.util public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        String N = scanner.nextLine();

        System.out.println(N.contains("7") ? "Yes" : "No");
    }
} Main public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        String N = scanner.nextLine();

        System.out.println(N.contains("7") ? "Yes" : "No");
    } main {
        Scanner scanner = new Scanner(System.in);
        String N = scanner.nextLine();

        System.out.println(N.contains("7") ? "Yes" : "No");
    } Scanner scanner = new Scanner(System.in); scanner new Scanner(System.in) String N = scanner.nextLine(); N scanner.nextLine() scanner.nextLine scanner System.out.println(N.contains("7") ? "Yes" : "No") System.out.println System.out System System.out N.contains("7") ? "Yes" : "No" N.contains("7") N.contains N "7" "Yes" "No" String[] args args public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        String N = scanner.nextLine();

        System.out.println(N.contains("7") ? "Yes" : "No");
    }
} public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        String N = scanner.nextLine();

        System.out.println(N.contains("7") ? "Yes" : "No");
    }
} Main
import java.util.Scanner;

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

        System.out.println(N.contains("7") ? "Yes" : "No");
    }
}