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: 3407 @ 917 # 567 @ 5987 # 5936
Example Output: 3808

Example Input: 1516 # 4681 # 225 # 3393 @ 1212 @ 367
Example Output: -5204

Example Input: 8635 @ 9940 @ 6043 @ 9105 @ 9177 @ 2271 @ 5260 @ 9500 @ 8122
Example Output:
68053