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

Example Input: 6915 @ 3564 # 9197 # 9440 # 1112 @ 382 @ 9681 # 6512 # 9658
Example Output: -15377

Example Input: 2095 # 5428 @ 3055 @ 1752 @ 2919 # 3592 # 7407
Example Output: -6606

Example Input: 2714 # 4963 # 1951 @ 4304
Example Output:
104