title: How to identify the maximum value that is 2 times higher than next maximum value
body: <p>How to identify the maximum value by each row (ex: 20 of b1 and a4) that is 2 times higher than next maximum value (5 of b1 and a3) of the same row?</p>
  
  <p><strong>sample input</strong></p>
  
  <pre><code>name    a1  a2  a3  a4
  b1  1   1   5   20
  b2  10  9   20  9
  b3  1   1   1   1
  </code></pre>
  
  <p><strong>sample output</strong></p>
  
  <pre><code>b1  a4  20
  b2  a3  20
  </code></pre>