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: 2065 @ 2103 @ 1800

Output: 5968


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

Output: -9002


Input: Consider Input: 9407 @ 8480 # 8062


Output: 9825