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: 2132 @ 8398 # 9269

Output: 1261


Input: Consider Input: 6896 @ 8548 @ 1670 @ 7550 # 921

Output: 23743


Input: Consider Input: 8196 @ 7820 # 8484 # 7462 @ 8007 # 414


Output: 7663