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:
7671 # 7716 @ 5899 @ 2520 # 497 # 24 # 16 # 840 # 9556

Ex Output:
-2559


Ex Input:
3876 @ 6607 # 1034 # 2483 @ 544 # 1053 @ 4907 @ 1303 @ 3904

Ex Output:
16571


Ex Input:
6058 # 5207 @ 888 # 7984

Ex Output:

-6245