The production date of automobile tires is very easy to identify. In a small square on the sidewall of the tire, the date of production of the tire is marked, which consists of four digits, with the last two digits indicating the year and the first two digits indicating the week. As shown below, "35 13" means that the tire was produced in the 35th week of 20 13, which is about September of 20 13.

For another example, "4 1 17" in the figure below indicates that the tire was produced on 4 1 week of 20 17, which is about 20 17 years 10 month.