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: 2763 @ 869 # 8299

Output: -4667


Input: Consider Input: 281 @ 7793 @ 5184 # 2962 @ 4511

Output: 14807


Input: Consider Input: 8263 @ 9167 @ 4004 @ 9342 # 1293 @ 867


Output: 30350