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: 9629 @ 3687 @ 328

Output: 13644


Input: Consider Input: 7483 @ 4061 @ 195 # 1982 @ 5673 # 6623 @ 9661 @ 7613

Output: 26081


Input: Consider Input: 7516 @ 4753 # 7638 @ 4056


Output: 8687