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: 9007 @ 6876 # 2672 # 3947 @ 6822 @ 806 @ 4508 @ 5112

Output: 26512


Input: Consider Input: 8053 # 8275 @ 3672 # 7233 @ 8748 # 1270 # 6997 # 7566 @ 5689

Output: -5179


Input: Consider Input: 2776 # 4483 @ 1373 @ 565 @ 8624 @ 9327 # 9708 # 3957 @ 9164


Output: 13681