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: 427 # 7974 # 7564 @ 2404 # 4955 # 1239 # 1518 @ 906
Example Output: -19513

Example Input: 4324 # 426 # 9171 # 980 @ 9454 @ 9720 # 7367 # 9266 # 1237
Example Output: -4949

Example Input: 5363 @ 4649 @ 6874 @ 777
Example Output:
17663