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: 452 # 5631 # 8307 # 1886 @ 4631 @ 1695 @ 4411 # 769

Output: -5404


Input: Consider Input: 7671 # 7716 @ 5899 @ 2520 # 497 # 24 # 16 # 840 # 9556

Output: -2559


Input: Consider Input: 962 @ 5839 @ 7349 # 2498 # 5491 @ 4847


Output: 11008