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: 2560 @ 144 @ 6785 @ 572 # 5190 @ 1929

Output: 6800


Input: Consider Input: 1380 @ 6582 # 4036

Output: 3926


Input: Consider Input: 8190 @ 2366 # 6280 # 262 @ 3035 @ 4705


Output: 11754