Hey!

You should not use functions, which returns double, if you works with integers. Double converts to Int by removing float part and all doubles are stored with some precision. For e.g., if you make double x = 3, in fact it may be 2.999999999999999999999 instead of 3, so if u want convert it to Int, you will get 2, but not 3

pow() and log10() returns double, so it's better not to use them

You can find out more info about functions u use on cppreference.com

There is an example:

works good: 276247840

doesn't work: 276718137

and the difference is only in types: I used double instead of int in second case