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:
2167 # 8760 # 4771 # 8633 @ 7929 @ 9784 @ 6892

Ex Output:
4608


Ex Input:
6467 # 8145 # 9388 # 9232

Ex Output:
-20298


Ex Input:
9117 @ 3890 @ 3335 # 1734 # 1335 # 761 @ 1094

Ex Output:

13606