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:
3894 # 3818 # 2119 # 6333

Ex Output:
-8376


Ex Input:
1718 # 8860 # 9652

Ex Output:
-16794


Ex Input:
6059 @ 7268 @ 1336 @ 8368 @ 3493 @ 4303 @ 1681 @ 9284

Ex Output:

41792