Each of three cards has an integer written on it. The three integersp, q, r satisfy
the condition 0 ≤ p < q < r. Three players A, B, C mix the cards and pick one each.
The number on the card they select is added to their scores.
This process is repeated at most ten times, after which A has 20 points, B has 10
points, and C has 9 points. Also we know that B got the r card in the last round.
Who received the q card in the first round?