deletions | additions       diff --git a/Version1.tex b/Version1.tex  index 7fde3bf..6ab1a1c 100644  --- a/Version1.tex  +++ b/Version1.tex 
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(c+d)\sum_{i=0}^{n-1} (\sum_{j=i}^{n-1} 1) +  \frac{d}{2}n(n-1)\sum_{i=0}^{n-1} 1 +  \frac{d}{2}\sum_{i=0}^{n-1} i^2 +  \frac{d}{2}(1-2n)\sum_{i=0}^{n-1} i =\\ = \\  = (c+d)\sum_{i=0}^{n-1} (n-i) +  \frac{d}{2}n^2(n-1) +  \frac{d}{2}(\frac{n(n-1)(2n-1)}{6}) +  \frac{d}{2}(1-2n)\frac{1}{2}n(n-1) =\\ = \\  = \frac{1}{2}(  (c+d)(n^2 + n) +