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:
6055 # 1440 # 3272 # 5643 @ 150 @ 7658 # 8655 @ 8463 # 8156

Ex Output:
-4840


Ex Input:
1508 # 9607 @ 9117 @ 1943 # 3539 # 8743 # 2584 @ 7819

Ex Output:
-4086


Ex Input:
2432 @ 588 # 6240 @ 8670

Ex Output:

5450