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: 8129 # 5764 @ 7961 # 2052 @ 6379

Output: 14653


Input: Consider Input: 4945 # 9916 # 656 @ 6515 # 5000 @ 6599 # 9652

Output: -7165


Input: Consider Input: 6742 # 9022 # 6158 # 434


Output: -8872