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: 2863 @ 9899 # 2358

Output: 10404


Input: Consider Input: 5768 @ 319 # 2546 @ 5236 # 6529 # 5734 @ 7926

Output: 4440


Input: Consider Input: 6922 @ 606 # 7060 # 9073 # 1429


Output: -10034