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: 9007 @ 6876 # 2672 # 3947 @ 6822 @ 806 @ 4508 @ 5112

Output: 26512


Input: Consider Input: 440 @ 5472 # 6900 # 3389

Output: -4377


Input: Consider Input: 2729 @ 4530 # 516 @ 9402


Output: 16145