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: 5211 # 3266 @ 3042 @ 254 # 7823 @ 4298 # 8042 # 1629 # 6738

Output: -14693


Input: Consider Input: 7211 # 614 @ 1584 # 4857 # 1495 # 1821 # 2219

Output: -2211


Input: Consider Input: 5175 # 1277 @ 3544 # 2831 # 8759


Output: -4148


