#include <iostream>
#include <vector>
#include <string>
using namespace std;

string gira(string s){
	string ss;
	for(int i = 0;i<s.size();++i){
		ss[i] = s[s.size()-(i+1)];
	}
	cout << ss << endl;
	return ss;
}

int main(){
	string s1,s2;
	cin >> s1 >> s2;
	bool yes = true;
	int contador = 0;
	while(yes and contador < s1.size()){
		if(s1[contador] != s2[contador]){
			yes = false;
		}
		++contador;
	}
	if(not yes){
		s2 = gira(s2);
		yes = true;
		int cont = 0;
		while(yes and cont < s1.size()){
		   if(s1[cont] != s2[cont]){
			   yes = false;
		   }
		   ++cont;
	   }
	}
	if(yes){
		cout << "yes" << endl;
	}
	else{
		cout << "no" << endl;
	}
}