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: 2095 # 5428 @ 3055 @ 1752 @ 2919 # 3592 # 7407

Output: -6606


Input: Consider Input: 1694 # 2335 @ 4045 @ 7262 # 1822 # 1728 # 2135


Output: 4981