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:
1477 @ 6645 @ 6272 # 3080

Ex Output:
11314


Ex Input:
7065 # 7713 # 7473 # 664 # 8030

Ex Output:
-16815


Ex Input:
5191 # 7400 @ 7319 # 5932 @ 662 @ 1546

Ex Output:

1386