
import java.util.Scanner;
public class Main {
	 public static void main(String args[]){
	Scanner scanner = new Scanner(System.in);
	// "abc"という文字列
	String a=scanner.next();
	String b=scanner.next();
	// 変数strの長さ分回す
	for (int i = 0; i < a.length(); i++) {
	    // strの先頭から1文字ずつString型にして取り出す
	    String str1 = String.valueOf(a.charAt(i));
	    String str2 = String.valueOf(b.charAt(i));
	    if(str1.equals(str2)){
	    	if(i==a.length()-1) {
	    		System.out.println("Yes");
	    		break;
	    	}
        }
	    else {
	    	System.out.println("No");
	    	break;
	    }

	}}
}

/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz