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: 2367 @ 4877 @ 8467 @ 5488 # 987 # 8899

Output: 11313


Input: Consider Input: 6484 # 6042 @ 239 # 5161 # 7940 @ 2882 @ 8393 # 311 @ 6933

Output: 5477


Input: Consider Input: 8919 # 8115 # 8836


Output: -8032