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: 3651 @ 4392 @ 7612 # 1575 @ 8307

Output: 22387


Input: Consider Input: 524 @ 1123 # 5900 # 4128 # 1486 # 9545

Output: -19412


Input: Consider Input: 2703 # 3582 # 8193 # 8358 @ 2106 # 4697 # 8342 @ 2653 @ 4937


Output: -20773