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

Ex Input:
1327 # 8233 # 8048 # 194 @ 2192 @ 1877 # 3427 # 3364 # 6008

Ex Output:
-23878


Ex Input:
7775 @ 8190 # 2579 @ 1003

Ex Output:
14389


Ex Input:
2511 @ 1177 @ 2559 @ 6074

Ex Output:

12321