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++];
  }
  
  /**
  *   The variables 'firstInteger', 'firstDecimal', and 'firstString' are declared for you -- do not modify them.
  *   Print three lines:
  *   1. The sum of 'firstInteger' and the Number representation of 'secondInteger'.
  *   2. The sum of 'firstDecimal' and the Number representation of 'secondDecimal'.
  *   3. The concatenation of 'firstString' and 'secondString' ('firstString' must be first).
  *
  *	Parameter(s):
  *   secondInteger - The string representation of an integer.
  *   secondDecimal - The string representation of a floating-point number.
  *   secondString - A string consisting of one or more space-separated words.
  **/
  function performOperation(secondInteger, secondDecimal, secondString) {
      // Declare a variable named 'firstInteger' and initialize with integer value 4.
      const firstInteger = 4;
  
      // Declare a variable named 'firstDecimal' and initialize with floating-point value 4.0.
      const firstDecimal = 4.0;
  
      // Declare a variable named 'firstString' and initialize with the string "HackerRank".
      const firstString = 'HackerRank ';
  
      // Write code that uses console.log to print the sum of the 'firstInteger' and 'secondInteger' (converted to a Number        type) on a new line.
      console.log(firstInteger + parseInt(secondInteger));
      console.log(firstDecimal + parseFloat(secondDecimal));
      console.log(firstString + secondString);
  
  
      // Write code that uses console.log to print the sum of 'firstDecimal' and 'secondDecimal' (converted to a Number            type) on a new line.
  
  
      // Write code that uses console.log to print the concatenation of 'firstString' and 'secondString' on a new line. The        variable 'firstString' must be printed first.
  
  }
  