3. In a watch repair shop, there is a certain number of electronic watches (more than one), displaying time in a 12-hour format (the number of hours on the watch face changes from 1 to 12). All of them run at the same speed, but show completely different times: the number of hours on the face of any two different watches is different, and the number of minutes is also different.

One day, the master added up the number of hours on the faces of all the watches, then added up the number of minutes on the faces of all the watches, and remembered the two resulting numbers. After some time, he did the same again and found that both the total number of hours and the total number of minutes had decreased by 1. What is the maximum number of electronic watches that could have been in the shop?
Answer: 11

## Examples of answer notation:

14

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