title: The code to count all the 5digit number pairs such that their addition does not involve any carrying, but the code is not giving any output?
body: <pre><code>l=0
  temp=[]
  for i in range(10000,100000):
      for j in range(11000,12000):
          n1=str(i)
          n2=str(j)
          for k in range(0,5):
  
              a=int(n1[k])
              b=int(n2[k])
              if a+b&lt;=9:
                  s=(a,b)
                  temp.append(s)
          if len(temp)==5:
              l+=1
              temp.clear()
  print(l)
   
  </code></pre>
  <p>this code is not giving any output, it is meant to count the number of 5digit number such that their sum does not involve any carrying</p>