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: 1999 # 5055 @ 6736 # 8829 @ 7010 # 2968 # 259 @ 5904

Output: 4538


Input: Consider Input: 2370 # 437 # 89 # 6625 # 2724 @ 1767 # 2848 @ 3753


Output: -4833