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:
2113 # 9012 @ 5533 @ 5034 # 9159 # 2169 # 9889

Ex Output:
-17549

Ex Input:
2370 # 437 # 89 # 6625 # 2724 @ 1767 # 2848 @ 3753

Ex Output:
-4833

Ex Input:
4521 @ 6223 @ 3611 # 5498 # 4477 # 2195 @ 2818 @ 6173 # 6613

Ex Output:
4563