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: 2678 # 5467 @ 8355 # 3124 # 5654

Output: -3212


Input: Consider Input: 3816 @ 8163 # 9273 @ 2037 @ 8051 @ 826

Output: 13620


Input: Consider Input: 5612 # 7607 # 7759 @ 6354 @ 1183 @ 7895 @ 5545 @ 7729


Output: 18952