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: 3393 # 1959 # 4338 # 8197 @ 3993 # 7625 # 7892

Output: -22625


Input: Consider Input: 8929 # 6145 @ 8551 # 1836 @ 9159

Output: 18658


Input: Consider Input: 9951 @ 9774 @ 5823 @ 5717 # 6852


Output: 24413