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:
5088 # 9353 # 2772 @ 3908 @ 9196 @ 4709

Ex Output:
10776


Ex Input:
7806 # 6020 # 4616 @ 3594 # 6312 # 5362 # 4403 @ 3666

Ex Output:
-11647


Ex Input:
7906 # 3722 @ 8833 @ 3068 # 3442 @ 7266 # 6933 # 8145 # 1144

Ex Output:

3687