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: 6467 # 8145 # 9388 # 9232
Example Output: -20298

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

Example Input: 1894 # 950 # 679 @ 6671 # 1675
Example Output:
5261