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: 9074 # 3474 @ 2553 @ 8125 # 7981 # 1438 @ 9668

Output: 16527


Input: Consider Input: 9924 @ 6266 # 7022 # 7976 # 2541 @ 5396

Output: 4047


Input: Consider Input: 2551 # 1266 @ 7915 # 2292 # 3884 # 1028 # 6715 @ 1508


Output: -3211