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: 4956 # 4259 # 3459

Output: -2762


Input: Consider Input: 2019 @ 3095 @ 5800

Output: 10914


Input: Consider Input: 2210 # 249 @ 6810 # 8266


Output: 505


