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:
1075 @ 2179 @ 2132 @ 6333 @ 8433 # 8868 # 1568 # 5987 # 5042

Ex Output:
-1313


Ex Input:
7178 # 2086 # 1606 @ 4624 @ 4559 # 4855

Ex Output:
7814


Ex Input:
4399 @ 9913 @ 4337 @ 3092 # 2634 @ 4911 # 8609 # 6017

Ex Output:

9392