import java.util.Scanner;

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        String S = sc.nextLine(), T = sc.nextLine();
        String result = T.startsWith(S) ? "Yes" : "No";

        System.out.println(result);
    }
} import java.util.Scanner; Scanner java.util public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        String S = sc.nextLine(), T = sc.nextLine();
        String result = T.startsWith(S) ? "Yes" : "No";

        System.out.println(result);
    }
} Main public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        String S = sc.nextLine(), T = sc.nextLine();
        String result = T.startsWith(S) ? "Yes" : "No";

        System.out.println(result);
    } main {
        Scanner sc = new Scanner(System.in);
        String S = sc.nextLine(), T = sc.nextLine();
        String result = T.startsWith(S) ? "Yes" : "No";

        System.out.println(result);
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String S = sc.nextLine() S sc.nextLine() sc.nextLine sc T = sc.nextLine(); T sc.nextLine() sc.nextLine sc String result = T.startsWith(S) ? "Yes" : "No"; result T.startsWith(S) ? "Yes" : "No" T.startsWith(S) T.startsWith T S "Yes" "No" System.out.println(result) System.out.println System.out System System.out result String[] args args public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        String S = sc.nextLine(), T = sc.nextLine();
        String result = T.startsWith(S) ? "Yes" : "No";

        System.out.println(result);
    }
} public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        String S = sc.nextLine(), T = sc.nextLine();
        String result = T.startsWith(S) ? "Yes" : "No";

        System.out.println(result);
    }
} Main
import java.util.Scanner;

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        String S = sc.nextLine(), T = sc.nextLine();
        String result = T.startsWith(S) ? "Yes" : "No";

        System.out.println(result);
    }
}
