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: 6942 @ 1857 @ 1508 @ 3059 # 6727

Output: 6639


Input: Consider Input: 5860 @ 3039 # 7874 # 3584 # 144

Output: -2703


Input: Consider Input: 3804 # 5140 @ 7961 # 2759 # 5465 # 4676 @ 2038 @ 3089 # 2462


Output: -3610