#include<bits/stdc++.h> using namespace std; int main (){ char a[1001] ,s[1001]; int n=0; cin >> a >> s; while(a[n] != '\0') { n++; } for(int i = 0;i < n / 2;i++) { if(a[i] != a[n - i -1]) { cout<<"No"; return 0; } } cout << "Yes"; return 0; }