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: 6744 # 8579 # 1271 @ 9372 @ 5898

Output: 12164


Input: Consider Input: 1460 # 2749 @ 8238 @ 4342 # 8963


Output: 2328