The Unified State Exam (USE) in mathematics in the magical country of Oz is organized as follows. Each paper is independently checked by three teachers, and each gives 0 or 1 point for each problem. Then the computer finds the arithmetic mean of the scores for that problem and rounds it to the nearest integer. The points received for all problems are then summed. It so happened that in one of the papers, each of the three experts gave 1 point for 3 problems and 0 points for all other problems. Find the highest possible total score for this paper.
It's easy to come up with a case where you get 4 points. To get 5 or more, there must be at least 10 units in total, but the teachers have only given 9 units in total. Therefore, it's impossible to get 5.

## Answer

4 points.