According to the pigeonhole principle, if you have more items than containers, then at least one container must hold more than one item.
Согласно принципу Дирихле, если у вас больше предметов, чем контейнеров, то, по крайней мере, в одном контейнере должно быть больше одного предмета.
Definitions
The pigeonhole principle is a mathematical concept stating that if more items are put into fewer containers than there are items, at least one container must contain more than one item. It is often used to prove the existence of duplicates or overlaps in various problems.