import 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();

    for(int i=0 ; i<s.length() ; i++){
      if(i<s.length()-1){
        if(s.charAt(i)==t.charAt(i)){
          continue;
        }else{
          System.out.println("No");
          break;
        }
      }else{
        if(s.charAt(i)==t.charAt(i)){
          System.out.println("Yes");
        }else{
          System.out.println("No");
        }
      }
    }
  }
} import java.util.*; util.* java public class Main{
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    String s = sc.next();
    String t = sc.next();

    for(int i=0 ; i<s.length() ; i++){
      if(i<s.length()-1){
        if(s.charAt(i)==t.charAt(i)){
          continue;
        }else{
          System.out.println("No");
          break;
        }
      }else{
        if(s.charAt(i)==t.charAt(i)){
          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();

    for(int i=0 ; i<s.length() ; i++){
      if(i<s.length()-1){
        if(s.charAt(i)==t.charAt(i)){
          continue;
        }else{
          System.out.println("No");
          break;
        }
      }else{
        if(s.charAt(i)==t.charAt(i)){
          System.out.println("Yes");
        }else{
          System.out.println("No");
        }
      }
    }
  } main {
    Scanner sc = new Scanner(System.in);
    String s = sc.next();
    String t = sc.next();

    for(int i=0 ; i<s.length() ; i++){
      if(i<s.length()-1){
        if(s.charAt(i)==t.charAt(i)){
          continue;
        }else{
          System.out.println("No");
          break;
        }
      }else{
        if(s.charAt(i)==t.charAt(i)){
          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 for(int i=0 ; i<s.length() ; i++){
      if(i<s.length()-1){
        if(s.charAt(i)==t.charAt(i)){
          continue;
        }else{
          System.out.println("No");
          break;
        }
      }else{
        if(s.charAt(i)==t.charAt(i)){
          System.out.println("Yes");
        }else{
          System.out.println("No");
        }
      }
    } int i=0 ; int i=0 ; i 0 i<s.length() i s.length() s.length s i++ i++ i {
      if(i<s.length()-1){
        if(s.charAt(i)==t.charAt(i)){
          continue;
        }else{
          System.out.println("No");
          break;
        }
      }else{
        if(s.charAt(i)==t.charAt(i)){
          System.out.println("Yes");
        }else{
          System.out.println("No");
        }
      }
    } {
      if(i<s.length()-1){
        if(s.charAt(i)==t.charAt(i)){
          continue;
        }else{
          System.out.println("No");
          break;
        }
      }else{
        if(s.charAt(i)==t.charAt(i)){
          System.out.println("Yes");
        }else{
          System.out.println("No");
        }
      }
    } if(i<s.length()-1){
        if(s.charAt(i)==t.charAt(i)){
          continue;
        }else{
          System.out.println("No");
          break;
        }
      }else{
        if(s.charAt(i)==t.charAt(i)){
          System.out.println("Yes");
        }else{
          System.out.println("No");
        }
      } i<s.length()-1 i s.length()-1 s.length() s.length s 1 {
        if(s.charAt(i)==t.charAt(i)){
          continue;
        }else{
          System.out.println("No");
          break;
        }
      } if(s.charAt(i)==t.charAt(i)){
          continue;
        }else{
          System.out.println("No");
          break;
        } s.charAt(i)==t.charAt(i) s.charAt(i) s.charAt s i t.charAt(i) t.charAt t i {
          continue;
        } continue; {
          System.out.println("No");
          break;
        } System.out.println("No") System.out.println System.out System System.out "No" break; {
        if(s.charAt(i)==t.charAt(i)){
          System.out.println("Yes");
        }else{
          System.out.println("No");
        }
      } if(s.charAt(i)==t.charAt(i)){
          System.out.println("Yes");
        }else{
          System.out.println("No");
        } s.charAt(i)==t.charAt(i) s.charAt(i) s.charAt s i t.charAt(i) t.charAt t i {
          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();

    for(int i=0 ; i<s.length() ; i++){
      if(i<s.length()-1){
        if(s.charAt(i)==t.charAt(i)){
          continue;
        }else{
          System.out.println("No");
          break;
        }
      }else{
        if(s.charAt(i)==t.charAt(i)){
          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();

    for(int i=0 ; i<s.length() ; i++){
      if(i<s.length()-1){
        if(s.charAt(i)==t.charAt(i)){
          continue;
        }else{
          System.out.println("No");
          break;
        }
      }else{
        if(s.charAt(i)==t.charAt(i)){
          System.out.println("Yes");
        }else{
          System.out.println("No");
        }
      }
    }
  }
} Main
import 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();

    for(int i=0 ; i<s.length() ; i++){
      if(i<s.length()-1){
        if(s.charAt(i)==t.charAt(i)){
          continue;
        }else{
          System.out.println("No");
          break;
        }
      }else{
        if(s.charAt(i)==t.charAt(i)){
          System.out.println("Yes");
        }else{
          System.out.println("No");
        }
      }
    }
  }
}
