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: 2134 @ 3844 # 2757 # 9238 @ 8030 @ 1627 @ 2352 @ 1169

Output: 7161


Input: Consider Input: 9407 @ 4324 # 2220 # 8668 @ 1606 @ 4059

Output: 8508


Input: Consider Input: 4848 @ 8390 # 6375


Output: 6863