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: 5460 # 8572 @ 5548

Output: 2436


Input: Consider Input: 5986 # 3224 # 3957 @ 1893 @ 9453 @ 3954 # 476 # 5750 # 5163

Output: 2716


Input: Consider Input: 3462 # 2595 @ 1878


Output: 2745