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:
2095 # 5428 @ 3055 @ 1752 @ 2919 # 3592 # 7407

Ex Output:
-6606


Ex Input:
7272 @ 8958 # 7231 @ 6616

Ex Output:
15615


Ex Input:
1598 @ 2236 @ 5043 # 5588 # 3558 @ 4116 @ 7621

Ex Output:

11468