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:
1864 @ 8830 # 8139 # 5532 @ 9493 # 2897 # 3370 @ 2698 @ 3260

Ex Output:
6207


Ex Input:
8932 # 2337 @ 825 # 8463 @ 528

Ex Output:
-515


Ex Input:
440 @ 2806 # 2055 # 88 @ 2732

Ex Output:

3835