Let's consider the following problem — you have to integers 1 < A, B < 1000. And your task is to find the sum of them. Too difficult — you would say. Well... not really, see the thing is you do not have to implement the sum of two integers yourself. In many programming languages this option is already implemented. And you just have to put plus sign and that's it! For example you can make it in python and c++, also according to what I've heard — this option is also allowed in java and even javascript, but I am not sure.