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: 9012 @ 4688 # 2482 # 8827 # 2749 # 259 # 8385

Output: -9002


Input: Consider Input: 5137 @ 4207 @ 1156

Output: 10500


Input: Consider Input: 4943 @ 4787 # 6915 @ 1326 @ 2107


Output: 6248