import java.util.Scanner;

public class Main {
	public static void main(String[] args) {      
      Scanner sc = new Scanner(System.in);
      String S = sc.next();
      String T = sc.next();
      int check =0;
      for (int i=0; i<S.length(); i++) {
        if (S.charAt(i) == T.charAt(i)) check++;
      }
      if (check == S.length()) {
      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 sc = new Scanner(System.in);
      String S = sc.next();
      String T = sc.next();
      int check =0;
      for (int i=0; i<S.length(); i++) {
        if (S.charAt(i) == T.charAt(i)) check++;
      }
      if (check == S.length()) {
      System.out.println("Yes");
      } else {
          System.out.println("No");
      }
    }
} Main public static void main(String[] args) {      
      Scanner sc = new Scanner(System.in);
      String S = sc.next();
      String T = sc.next();
      int check =0;
      for (int i=0; i<S.length(); i++) {
        if (S.charAt(i) == T.charAt(i)) check++;
      }
      if (check == S.length()) {
      System.out.println("Yes");
      } else {
          System.out.println("No");
      }
    } main {      
      Scanner sc = new Scanner(System.in);
      String S = sc.next();
      String T = sc.next();
      int check =0;
      for (int i=0; i<S.length(); i++) {
        if (S.charAt(i) == T.charAt(i)) check++;
      }
      if (check == S.length()) {
      System.out.println("Yes");
      } else {
          System.out.println("No");
      }
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String S = sc.next(); S sc.next() sc.next sc String T = sc.next(); T sc.next() sc.next sc int check =0; check 0 for (int i=0; i<S.length(); i++) {
        if (S.charAt(i) == T.charAt(i)) check++;
      } int i=0; int i=0; i 0 i<S.length() i S.length() S.length S i++ i++ i {
        if (S.charAt(i) == T.charAt(i)) check++;
      } {
        if (S.charAt(i) == T.charAt(i)) check++;
      } if (S.charAt(i) == T.charAt(i)) check++; S.charAt(i) == T.charAt(i) S.charAt(i) S.charAt S i T.charAt(i) T.charAt T i check++ check if (check == S.length()) {
      System.out.println("Yes");
      } else {
          System.out.println("No");
      } check == S.length() check S.length() S.length 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 sc = new Scanner(System.in);
      String S = sc.next();
      String T = sc.next();
      int check =0;
      for (int i=0; i<S.length(); i++) {
        if (S.charAt(i) == T.charAt(i)) check++;
      }
      if (check == S.length()) {
      System.out.println("Yes");
      } else {
          System.out.println("No");
      }
    }
} public class Main {
	public static void main(String[] args) {      
      Scanner sc = new Scanner(System.in);
      String S = sc.next();
      String T = sc.next();
      int check =0;
      for (int i=0; i<S.length(); i++) {
        if (S.charAt(i) == T.charAt(i)) check++;
      }
      if (check == S.length()) {
      System.out.println("Yes");
      } else {
          System.out.println("No");
      }
    }
} Main
import java.util.Scanner;

public class Main {
	public static void main(String[] args) {      
      Scanner sc = new Scanner(System.in);
      String S = sc.next();
      String T = sc.next();
      int check =0;
      for (int i=0; i<S.length(); i++) {
        if (S.charAt(i) == T.charAt(i)) check++;
      }
      if (check == S.length()) {
      System.out.println("Yes");
      } else {
          System.out.println("No");
      }
    }
}