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: 5406 @ 9263 @ 7443 @ 6591 # 7496 @ 2721 # 7867

Output: 16061


Input: Consider Input: 6896 @ 8548 @ 1670 @ 7550 # 921

Output: 23743


Input: Consider Input: 132 @ 5920 # 7053 @ 224 @ 8197 @ 7028 @ 6109 @ 8130 @ 7657


Output: 36344