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:
4130 @ 6495 # 3973

Ex Output:
6652


Ex Input:
1059 # 7372 @ 4733 @ 9323 # 2108 @ 1244 @ 4077 # 7899 # 5842

Ex Output:
-2785


Ex Input:
2794 # 1907 # 4796 @ 1575 @ 6904 # 2752 @ 8010 @ 5798 @ 713

Ex Output:

16339