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:
1949 @ 526 @ 1777 @ 8065 @ 2790 # 1800 # 486 @ 229 @ 7738

Ex Output:
20788


Ex Input:
610 # 7967 # 8700 # 5966 @ 4310 @ 9963 # 8525

Ex Output:
-16275


Ex Input:
5748 @ 4835 # 9643 @ 9260 # 9986 # 1148 @ 5377 @ 504 @ 4416

Ex Output:

9363