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: 381 # 4084 # 9377 # 3092

Output: -16172


Input: Consider Input: 2988 @ 927 @ 5753 # 7711


Output: 1957


