C. 715.

(5 points)

Deadline expired.

Statistics on problem C. 715. 315 students sent a solution. 5 points: 116 students. 4 points: 42 students. 3 points: 1 student. 2 points: 127 students. 1 point: 15 students. 0 point: 12 students. Unfair, not evaluated: 2 solutions.