output_description: Print `YES` if this grid remains the same when rotated 180 degrees; print `NO`
  otherwise.
  
  * * *
input_description: Input is given from Standard Input in the following format:
  
      
      
      C_{11}C_{12}C_{13}
      C_{21}C_{22}C_{23}
attempt: #include<iostream>
  #include<vector>
  #include<string>
  #include<algorithm>
  #include<cmath>
  #include<iomanip>
  #include<map>
  using namespace std;
  template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; }
  template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; }
  const long long INF = 1LL << 60;
  #define rep(i, n) for (int i = 0; i < (int)(n); i++)
  
  
  
  int main(){
      char c[2][3];
      rep(i,2) rep(j,3) cin>>c[i][j];
  
      bool ans=true;
  
      if(c[0][0]!=c[1][2]||c[0][1]!=c[1][1]||c[0][2]!=c[1][0]){
          ans=false;
      }
      if(ans) cout<<"YES"<<endl;
      else cout<<"NO"<<endl;
  }
problem_description: Statement
  
  You are given a grid with 2 rows and 3 columns of squares. The color of the
  square at the i-th row and j-th column is represented by the character C_{ij}.
  
  Write a program that prints `YES` if this grid remains the same when rotated
  180 degrees, and prints `NO` otherwise.
samples: [{"input": "pot\n    top", "output": "YES\n    \n\nThis grid remains the same when rotated 180 degrees.\n\n* * *"}, {"input": "tab\n    bet", "output": "NO\n    \n\nThis grid does not remain the same when rotated 180 degrees.\n\n* * *"}, {"input": "eye\n    eel", "output": "NO"}]