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:
1086 # 7477 # 9664 @ 5904 # 8033 # 5563

Ex Output:
-23747


Ex Input:
9786 @ 7240 # 8099 @ 100 @ 4573 @ 5982 @ 9270 @ 9911 # 8249

Ex Output:
30514


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

Ex Output:

-5213