In this task you will be given an arithmetic operation and you have to find its answer. The operators '+' and '-' have been replaced with new symbols. Specifically, '+' has been replaced with the symbol '@' and '-' with the symbol '#'. You need to perform the operations in the given equation return the answer

Ex Input:
9039 @ 4996 @ 845 # 5409

Ex Output:
9471


Ex Input:
8451 # 7523 @ 454 @ 459 @ 182 @ 6187 # 2835

Ex Output:
5375


Ex Input:
8263 @ 1947 @ 64 # 3088 @ 4671 # 5709 @ 2982

Ex Output:

9130