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

Example Input: 6844 @ 1340 # 4174 # 5664 @ 4911 # 5241
Example Output: -1984

Example Input: 3931 # 7411 @ 824 @ 5416 @ 6386 # 9772
Example Output:
-626