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

Output: 4440


Input: Consider Input: 5052 # 6923 @ 1011

Output: -860


Input: Consider Input: 3643 # 2527 @ 8691 # 4910 # 6316


Output: -1419