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: 7894 @ 7649 # 4792

Output: 10751


Input: Consider Input: 8571 # 5985 @ 8912

Output: 11498


Input: Consider Input: 480 @ 9667 # 9401 # 8432 @ 4915 @ 1108 @ 5874 # 3694


Output: 517