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:
5992 @ 7637 # 7427 @ 1102 @ 677 @ 9685 @ 6972

Ex Output:
24638


Ex Input:
3839 # 8343 # 3366 @ 9432 @ 4687 @ 2441 # 89

Ex Output:
8601


Ex Input:
6267 @ 3304 @ 9078 @ 9734 # 2947 # 4223 @ 4824 # 3116

Ex Output:

22921