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: 3407 @ 917 # 567 @ 5987 # 5936

Output: 3808


Input: Consider Input: 3007 @ 8777 # 8750

Output: 3034


Input: Consider Input: 6385 @ 2852 @ 441 @ 5217 # 235 # 2392 @ 3068


Output: 15336


