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

Input: Consider Input: 298 @ 1699 @ 1367 @ 5001

Output: 8365


Input: Consider Input: 1614 @ 5794 # 2578

Output: 4830


Input: Consider Input: 9659 # 2309 @ 376 @ 8815


Output: 16541