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: 415 @ 1312 # 9916 @ 9168 @ 1911

Output: 2890


Input: Consider Input: 7021 # 2043 @ 7414 # 2632 @ 2939 @ 8718 @ 2731


Output: 24148


