import java.util.Scanner;

public class Main {

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

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

        }
    } main {
        Scanner scanner = new Scanner(System.in);
        String target = scanner.nextLine();
        if (target.contains("7")) {
            System.out.println("Yes");
        } else {
            System.out.println("No");

        }
    } Scanner scanner = new Scanner(System.in); scanner new Scanner(System.in) String target = scanner.nextLine(); target scanner.nextLine() scanner.nextLine scanner if (target.contains("7")) {
            System.out.println("Yes");
        } else {
            System.out.println("No");

        } target.contains("7") target.contains target "7" {
            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" String[] args args public class Main {

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

        }
    }
} public class Main {

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

        }
    }
} Main
import java.util.Scanner;

public class Main {

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

        }
    }
}
