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: 9646 # 9392 @ 7231 @ 7510 # 4746 # 2757 # 2536 @ 5415 # 2152

Output: 8219


Input: Consider Input: 826 # 6501 # 223 @ 9761 # 8863

Output: -5000


Input: Consider Input: 9012 # 7958 # 951 # 3753 @ 5601 @ 8942 @ 2251 @ 4526


Output: 17670