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: 8929 # 6145 @ 8551 # 1836 @ 9159

Output: 18658


Input: Consider Input: 6203 # 8978 # 1139 @ 240 # 4716

Output: -8390


Input: Consider Input: 6351 @ 1509 @ 5209 @ 3345


Output: 16414