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: 9645 @ 911 @ 6748 # 3005 # 3625 # 87 @ 3003 # 5587 # 1382

Output: 6621


Input: Consider Input: 8158 @ 1325 @ 395 # 4068 @ 4226 @ 7713 @ 8368 # 3297

Output: 22820


Input: Consider Input: 2163 # 7473 @ 1426 @ 8026 @ 6916 # 1731 @ 4388 # 2550 # 9891


Output: 1274