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: 192 # 4739 @ 5302 @ 6325 @ 5528 @ 1101 # 157 # 6921 @ 5541

Output: 12172


Input: Consider Input: 4767 # 4944 # 4202 @ 2582

Output: -1797


Input: Consider Input: 5942 @ 1638 # 5973 @ 9761 # 9900 @ 6548


Output: 8016