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:
5177 @ 9496 # 845 @ 5246 @ 9906 @ 5654 @ 1721 @ 5303

Ex Output:
41658


Ex Input:
120 # 2644 @ 4589

Ex Output:
2065


Ex Input:
3943 @ 35 @ 487 @ 1353 @ 3911 @ 3062 @ 6040 # 1685

Ex Output:

17146