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: 3938 @ 6900 @ 1254 @ 25 # 7237 # 5576 @ 8865 # 8864 @ 1349

Output: 654


Input: Consider Input: 8422 @ 5670 # 5825 @ 3613

Output: 11880


Input: Consider Input: 1547 @ 4568 @ 3505 # 278 @ 9054


Output: 18396