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:
5968 # 833 # 9263 @ 5675 @ 3262 # 2158

Ex Output:
2651


Ex Input:
3586 # 8254 # 4130 # 5426

Ex Output:
-14224


Ex Input:
4733 @ 5192 @ 1596 # 3341

Ex Output:

8180