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:
6312 @ 1446 # 1616 @ 6758 # 9137 @ 6041

Ex Output:
9804


Ex Input:
5027 @ 4058 # 8225 @ 9216 # 3101 @ 8259 # 2376 # 6826 # 8997

Ex Output:
-2965


Ex Input:
3060 # 5310 # 2484 # 2970 @ 2028 @ 1985 @ 1926

Ex Output:

-1765