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:
643 @ 9262 # 6489 @ 1803 @ 6271

Ex Output:
11490


Ex Input:
8054 # 1190 # 4970 @ 1707 @ 7460 @ 6240 # 6115

Ex Output:

11186