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: 1855 # 9818 @ 3927 @ 9533 # 8557 @ 619 # 7543 # 2844
Example Output: -12828

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

Example Input: 4999 # 3360 # 3670
Example Output:
-2031