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: 5235 @ 3917 @ 4902 @ 3831 # 6517

Output: 11368


Input: Consider Input: 5263 @ 8483 # 8668 @ 4802 # 7388 @ 2501 @ 3137 # 8399

Output: -269


Input: Consider Input: 1128 # 8249 # 1187 # 4702 # 9671 @ 2654 @ 665 # 9273 @ 6614


Output: -22021