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: 8571 # 5985 @ 8912

Output: 11498


Input: Consider Input: 3438 # 3865 # 956 # 3020 @ 2696

Output: -1707


Input: Consider Input: 6988 @ 3970 # 503 # 210 # 7923 @ 5850


Output: 8172