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:
1949 @ 526 @ 1777 @ 8065 @ 2790 # 1800 # 486 @ 229 @ 7738

Ex Output:
20788


Ex Input:
2065 @ 3769 @ 9915 # 6270 @ 3929 @ 5328 @ 6079 @ 5250 @ 843

Ex Output:
30908


Ex Input:
7110 @ 1246 # 1648 # 679 # 5483 # 2415 # 7639 # 2506 # 7084

Ex Output:

-19098