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

void swap (char& a, char& b) {
    char c = a;
    a = b;
    b = c;
}

string gira(string s) {
    int n = s.size();
    for (int i = 0; i < n/2; ++i) {
        swap(s[i], s[(n-1)-i]);
    }
    return s;
}

bool son_iguals(string s1, string s2) {

    int n = s1.size();
    string s3 = gira(s1);

    for (int i = 0; i < n; ++i) {
        if (s1[i] != s2[i] and s3[i] != s2[i]) return false;
    }
    return true;
}

int main() {

    string s1, s2;

    while (cin >> s1 and cin >> s2) {
        if (son_iguals(s1, s2)) cout << "yes" << endl;
        else cout << "no" << endl;
    }
}