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: 64 # 5994 @ 8659 # 885

Output: 1844


Input: Consider Input: 1040 # 6682 @ 4286 # 1132 # 705 @ 4048 # 9240

Output: -8385


Input: Consider Input: 6743 @ 4290 # 5915 @ 7335 # 8266


Output: 4187