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

Input: Consider Input: 1278 @ 4628 @ 2357 @ 3694 @ 5775 @ 8542 # 793

Output: 25481


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

Output: 30908


Input: Consider Input: 1294 # 4752 # 8113 @ 9201 @ 8582 # 7189 @ 2849


Output: 1872