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: 281 @ 7793 @ 5184 # 2962 @ 4511

Output: 14807


Input: Consider Input: 8293 # 4243 # 6119 @ 5292

Output: 3223


Input: Consider Input: 4647 # 2106 @ 6760 @ 3296 # 9772


Output: 2825