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: 1559 # 9981 # 6881

Output: -15303


Input: Consider Input: 486 # 3873 # 1187

Output: -4574


Input: Consider Input: 5579 # 9608 # 3424 # 7819 @ 9023 # 9164 @ 9300 @ 996 @ 4703


Output: -414