title: Appending Co-Ordinates to a list as integers
body: <p>My code is,</p>
  
  <pre><code>n = int(input("Enter the Number of Lines : "))
  s = []
  c = []
  
  for i in range(2): #n=2
      m = int(input("Line's Number : "))
      s.append(m)
      c.append(input("Enter Co-ordinates : ").split())
  </code></pre>
  
  <p>input line 1: (1,2),(3,4)<br>
  input line 2: (6,7),(9,0)</p>
  
  <p>output should be : [[1,3,6,9],[2,4,7,0]]</p>