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: 1463 @ 3742 @ 6816 @ 2090 @ 7068 @ 283 # 5740 @ 4067

Output: 19789


Input: Consider Input: 580 @ 9980 # 4059 # 4694 @ 8096 # 3324

Output: 6579


Input: Consider Input: 7169 # 5670 # 2322 @ 809 # 3886 @ 1140 # 2533


Output: -5293