It's not a programming challenge.
It's more of "Can you read me whole?" challenge.

Kinda reminds License agreement...

Moreover, it was rejudged recently. And I have no idea now where is mistake. My AC was in 2012 :D

Last paragraph was added

nikita.seleznev, we have addition 1 game & 2 new peoples.

They added one more paragraph. - In this paragraph there is a description of a new contest, and two new teammates: "The numbers of Timothée and Alexandre are 12 and 13 respectively." They only took part in that one last contest. This also meant that Vadik has one new contest to add to hes experience. As we can read in the description "Vadik — 1", "And a number one participated in 21 contests." That's why results of test #1 changed today from 20 to 21 ;)

Thank you, guys!