text: 'use strict';
  
  process.stdin.resume();
  process.stdin.setEncoding('utf-8');
  
  let inputString = '';
  let currentLine = 0;
  
  process.stdin.on('data', inputStdin => {
      inputString += inputStdin;
  });
  
  process.stdin.on('end', _ => {
      inputString = inputString.trim().split('\n').map(string => {
          return string.trim();
      });
      
      main();    
  });
  
  function readLine() {
      return inputString[currentLine++];
  }
  
  /*
   * Complete the reverseString function
   * Use console.log() to print to stdout.
   */
  function reverseString(s) {
      try{
          var splitString = s.split("");
          var reverseArray = splitString.reverse();
          var joinArray = reverseArray.join("");
          console.log(joinArray);
      }
      catch(error) {
          console.log(error.message);
          console.log(s);
          
      }
  }
  
  
  function main() {
      const s = eval(readLine());
      
      reverseString(s);
  }