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: 9056 @ 9894 # 9773 # 4508 # 5642

Output: -973


Input: Consider Input: 6148 @ 1077 @ 5914 # 245 @ 5862 @ 8792 # 9099

Output: 18449


Input: Consider Input: 8407 # 5204 @ 8451 # 6859 @ 8049 @ 3155


Output: 15999


