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: 2020 @ 862 # 5780

Output: -2898


Input: Consider Input: 440 @ 5472 # 6900 # 3389

Output: -4377


Input: Consider Input: 2295 @ 377 @ 740 # 3375 @ 5097 @ 4841 # 8074 @ 7871


Output: 9772


