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: 9049 # 6438 @ 8686 # 910 # 3586

Output: 6801


Input: Consider Input: 3970 # 8486 # 9402 # 8030 @ 4724 @ 8858

Output: -8366


Input: Consider Input: 266 # 5519 @ 8770


Output: 3517