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: 3347 # 2950 @ 6671 @ 4670 # 7283
Example Output: 4455

Example Input: 345 @ 1076 @ 7948 # 854
Example Output: 8515

Example Input: 7193 @ 9724 # 8644 @ 3615 # 1460 # 4129 # 5164
Example Output:
1135