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: 2307 # 9363 @ 4926 @ 5635
Example Output: 3505

Example Input: 4238 # 9059 # 3579 @ 2750 # 6861 # 5756 @ 9729
Example Output: -8538

Example Input: 1644 @ 4752 @ 1054 @ 6778 @ 2967
Example Output:
17195