SPOJ, Problem Code: sumtrian, Reducing time taken to solve.

[Shriphani]

Hi,

I was trying to solve the sumtrian problem in the SPOJ problem set
( https://www.spoj.pl/problems/SUMTRIAN/ ) and this is the solution I
submitted: http://pastebin.ca/1035867

The result was, "Your solution from 2008-06-01 15:13:06 to problem
SUMTRIAN, written in Python,
has exceeded the allowed time limit."

I suspect that the first portion of my solution which looks at the
input, figures out the number of triangles and forms a list that
contains lists containing each row of the triangle, is wrong. I am not
too sure how to optimize it. I would appreciate help.

Thanks,
Shriphani Palakodety