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: 3337 @ 9906 @ 9733 # 853 @ 5075 # 2064 @ 9450 # 3886

Output: 30698


Input: Consider Input: 6597 @ 1596 # 358 # 9057 @ 993

Output: -229


Input: Consider Input: 6117 # 7831 @ 2871 @ 3638 # 9187 # 1834 @ 2546 # 5495


Output: -9175