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

Ex Input:
3816 @ 8163 # 9273 @ 2037 @ 8051 @ 826

Ex Output:
13620


Ex Input:
5520 @ 1174 # 2584 # 6276 # 6659 @ 8281 # 5456 @ 1602 @ 4624

Ex Output:
226


Ex Input:
8707 # 1960 @ 2711 @ 9120 # 15 @ 441 @ 7034

Ex Output:

26038