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:
6050 # 5266 # 3005

Ex Output:
-2221


Ex Input:
7295 @ 8477 @ 8646 @ 3487 # 114 # 9184

Ex Output:
18607


Ex Input:
2280 @ 7961 @ 1749 # 4845 # 1649 # 7323 # 4137

Ex Output:

-5964