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:
2243 # 9188 # 3609 # 6813 @ 6109 @ 6045

Ex Output:
-5213


Ex Input:
8678 @ 7424 # 7399 @ 4601 @ 9327 @ 7787 @ 2286

Ex Output:
32704


Ex Input:
6107 @ 7814 @ 7408 @ 8062 # 568 @ 4317

Ex Output:

33140