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: 9682 @ 9507 # 7565 # 4252

Output: 7372


Input: Consider Input: 5968 # 833 # 9263 @ 5675 @ 3262 # 2158

Output: 2651


Input: Consider Input: 1140 # 8081 # 4438 # 7138 # 1836 # 1810 @ 8331 # 6289


Output: -20121