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: 9806 @ 7051 @ 6703 @ 4233 # 276

Output: 27517


Input: Consider Input: 7640 @ 3347 @ 904

Output: 11891


Input: Consider Input: 5802 # 3730 # 9742 # 1980 @ 8428


Output: -1222