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: 1744 @ 4800 # 4688 @ 2637 # 1656 # 4459 # 9618 @ 4120
Example Output: -7120

Example Input: 826 # 6501 # 223 @ 9761 # 8863
Example Output: -5000

Example Input: 4178 @ 2369 # 9432 @ 7261
Example Output:
4376