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

Output: 26081


Input: Consider Input: 3438 # 3865 # 956 # 3020 @ 2696

Output: -1707


Input: Consider Input: 743 # 5756 @ 8649 # 2469 @ 8650 # 5529


Output: 4288