import java.util.Scanner;
 
public class Main{
    public static void main(String[] args) {
        Scanner in=new Scanner(System.in);
        String s=in.nextLine();
        String ss=in.nextLine();
        char ch[]=ss.toCharArray();
        String c="";
        for (int i = 0; i < ch.length-1; i++) {
            c=c+ch[i];
        }
        if(c.equals(s)){
            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 in=new Scanner(System.in);
        String s=in.nextLine();
        String ss=in.nextLine();
        char ch[]=ss.toCharArray();
        String c="";
        for (int i = 0; i < ch.length-1; i++) {
            c=c+ch[i];
        }
        if(c.equals(s)){
            System.out.println("Yes");
        }else{
            System.out.println("No");
        }
    }
} Main public static void main(String[] args) {
        Scanner in=new Scanner(System.in);
        String s=in.nextLine();
        String ss=in.nextLine();
        char ch[]=ss.toCharArray();
        String c="";
        for (int i = 0; i < ch.length-1; i++) {
            c=c+ch[i];
        }
        if(c.equals(s)){
            System.out.println("Yes");
        }else{
            System.out.println("No");
        }
    } main {
        Scanner in=new Scanner(System.in);
        String s=in.nextLine();
        String ss=in.nextLine();
        char ch[]=ss.toCharArray();
        String c="";
        for (int i = 0; i < ch.length-1; i++) {
            c=c+ch[i];
        }
        if(c.equals(s)){
            System.out.println("Yes");
        }else{
            System.out.println("No");
        }
    } Scanner in=new Scanner(System.in); in new Scanner(System.in) String s=in.nextLine(); s in.nextLine() in.nextLine in String ss=in.nextLine(); ss in.nextLine() in.nextLine in char ch[]=ss.toCharArray(); ch ss.toCharArray() ss.toCharArray ss String c=""; c "" for (int i = 0; i < ch.length-1; i++) {
            c=c+ch[i];
        } int i = 0; int i = 0; i 0 i < ch.length-1 i ch.length-1 ch.length ch ch.length 1 i++ i++ i {
            c=c+ch[i];
        } {
            c=c+ch[i];
        } c=c+ch[i] c c+ch[i] c ch[i] ch i if(c.equals(s)){
            System.out.println("Yes");
        }else{
            System.out.println("No");
        } c.equals(s) c.equals c s {
            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 in=new Scanner(System.in);
        String s=in.nextLine();
        String ss=in.nextLine();
        char ch[]=ss.toCharArray();
        String c="";
        for (int i = 0; i < ch.length-1; i++) {
            c=c+ch[i];
        }
        if(c.equals(s)){
            System.out.println("Yes");
        }else{
            System.out.println("No");
        }
    }
} public class Main{
    public static void main(String[] args) {
        Scanner in=new Scanner(System.in);
        String s=in.nextLine();
        String ss=in.nextLine();
        char ch[]=ss.toCharArray();
        String c="";
        for (int i = 0; i < ch.length-1; i++) {
            c=c+ch[i];
        }
        if(c.equals(s)){
            System.out.println("Yes");
        }else{
            System.out.println("No");
        }
    }
} Main
import java.util.Scanner;
 
public class Main{
    public static void main(String[] args) {
        Scanner in=new Scanner(System.in);
        String s=in.nextLine();
        String ss=in.nextLine();
        char ch[]=ss.toCharArray();
        String c="";
        for (int i = 0; i < ch.length-1; i++) {
            c=c+ch[i];
        }
        if(c.equals(s)){
            System.out.println("Yes");
        }else{
            System.out.println("No");
        }
    }
}