C. 783.

(5 points)

Deadline expired.

Statistics on problem C. 783. 409 students sent a solution. 5 points: 287 students. 4 points: 63 students. 3 points: 33 students. 2 points: 12 students. 1 point: 2 students. 0 point: 3 students. Unfair, not evaluated: 9 solutions.