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: 815 @ 7862 # 6166

Output: 2511


Input: Consider Input: 3438 # 3865 # 956 # 3020 @ 2696

Output: -1707


Input: Consider Input: 6113 @ 4517 @ 9545 @ 5722 @ 7430 @ 7248


Output: 40575