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: 3249 @ 313 @ 7029 @ 5721 @ 7626

Output: 23938


Input: Consider Input: 2989 # 6833 # 4298 @ 8863 # 8408

Output: -7687


Input: Consider Input: 532 @ 6570 # 7165 @ 8922 # 8028 # 9969 # 3494


Output: -12632