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:
9056 @ 9894 # 9773 # 4508 # 5642

Ex Output:
-973


Ex Input:
1222 @ 8928 # 3581 # 5049 @ 795 # 1937 @ 3689

Ex Output:

4067