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: 9466 # 395 @ 5036 # 8315 @ 1723

Output: 7515


Input: Consider Input: 8771 @ 2575 # 7914 # 3691

Output: -259


Input: Consider Input: 5359 @ 2006 # 7926 @ 7453 @ 7764


Output: 14656