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: 2900 # 2740 # 1706 @ 6629

Output: 5083


Input: Consider Input: 9746 # 6804 @ 5800 @ 8118 @ 2515 @ 1083 # 8754

Output: 11704


Input: Consider Input: 2260 @ 143 # 9978 @ 1274 @ 1026 @ 332 @ 3797


Output: -1146