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: 1086 # 7477 # 9664 @ 5904 # 8033 # 5563

Output: -23747


Input: Consider Input: 415 @ 1312 # 9916 @ 9168 @ 1911

Output: 2890


Input: Consider Input: 3249 @ 763 # 4288 @ 5117


Output: 4841