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: 6420 @ 6956 @ 9478 # 4046

Output: 18808


Input: Consider Input: 6348 # 2614 @ 3559 @ 9670 # 1137 # 9684

Output: 6142


Input: Consider Input: 3084 # 1096 @ 4783 @ 794 # 1115 @ 22 # 9148 @ 6654


Output: 3978


