7 Rings

In Chefland, a *valid* phone number consists of $5$ digits with **no leading zeros**. For example, $98765, 10000,$ and $71023$ are valid phone numbers while $04123, 9231,$ and $872310$ are not. Chef went to a store and purchased $N$ items, where the cost of each item is $X$. Find whether the total bill is equivalent to a *valid* phone number. ### Input - The first line of input will contain