C. 636.

(5 points)

Deadline expired.

Statistics on problem C. 636. 700 students sent a solution. 5 points: 96 students. 4 points: 48 students. 3 points: 107 students. 2 points: 51 students. 1 point: 98 students. 0 point: 296 students. Unfair, not evaluated: 4 solutions.