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:
4100 @ 4500 @ 5166 @ 7442 @ 3258

Ex Output:
24466


Ex Input:
2405 @ 2160 @ 394 # 8936 # 2551 @ 5734 @ 5167

Ex Output:
4373


Ex Input:
9776 @ 9839 @ 708 @ 6651

Ex Output:

26974


