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: 4324 # 426 # 9171 # 980 @ 9454 @ 9720 # 7367 # 9266 # 1237
Example Output: -4949

Example Input: 1664 # 2003 # 3533
Example Output: -3872

Example Input: 2805 # 6441 @ 9225 # 6209 @ 6798 @ 8555
Example Output:
14733