C. 775.

(5 points)

Deadline expired.

Statistics on problem C. 775. 518 students sent a solution. 5 points: 307 students. 4 points: 34 students. 3 points: 40 students. 2 points: 16 students. 1 point: 20 students. 0 point: 92 students. Unfair, not evaluated: 9 solutions.