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: 2307 # 9363 @ 4926 @ 5635

Output: 3505


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

Output: 14807


Input: Consider Input: 9482 # 5275 @ 2225 @ 671 # 6262 @ 1544 # 2582


Output: -197