C. 779.

(5 points)

Deadline expired.

Statistics on problem C. 779. 331 students sent a solution. 5 points: 235 students. 4 points: 6 students. 3 points: 3 students. 2 points: 15 students. 1 point: 25 students. 0 point: 44 students. Unfair, not evaluated: 3 solutions.