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: 4089 @ 276 @ 7408 # 9945 @ 4656

Output: 6484


Input: Consider Input: 1753 # 4314 @ 3538 # 7342 @ 6326 @ 6393 @ 136 @ 161 @ 4337

Output: 10988


Input: Consider Input: 9840 # 4718 # 566 @ 9054 # 2847 @ 5744


Output: 16507