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: 2787 @ 3800 # 142 # 7750 # 8581 @ 5447 @ 1512 @ 6550
Example Output: 3623

Example Input: 6884 @ 145 # 2208 # 5356 # 3578 @ 606
Example Output: -3507

Example Input: 774 @ 3095 @ 5455 # 8282 # 3756 @ 7239 # 8452 # 2538
Example Output:
-6465