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K. 18.

(6 points)

This problem is for grade 9 students only.

Deadline expired on 10 December 2004.

Statistics on problem K. 18. 135 students sent a solution. 6 points:114 students. 5 points:1 student. 3 points:2 students. 2 points:3 students. 1 point:3 students. 0 point:10 students. Unfair, not evaluated:2 solutions.