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: 1070 @ 5674 @ 50 # 2252

Output: 4542


Input: Consider Input: 2020 @ 862 # 5780

Output: -2898


Input: Consider Input: 3010 # 5654 @ 2849


Output: 205