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: 4844 # 1525 @ 1894 # 2506
Example Output: 2707

Example Input: 1199 # 1369 @ 4358 # 7803 @ 410 @ 1295 @ 4397 # 9436 @ 5291
Example Output: -1658

Example Input: 314 @ 6623 @ 7320
Example Output:
14257