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: 2853 @ 2447 @ 3565

Output: 8865


Input: Consider Input: 2285 @ 1970 @ 4720

Output: 8975


Input: Consider Input: 4943 @ 5151 @ 3711 # 4468 @ 5125 # 5926 @ 6945 @ 2308


Output: 17789