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 @ 8125 # 252 # 2790 # 9183 @ 3123 # 7282 # 5115 # 1943

Output: -13297


Input: Consider Input: 4326 # 2636 @ 9431 # 1021 # 6603 # 2905 # 80 # 7174 # 3558

Output: -10220


Input: Consider Input: 2034 # 2964 # 6566


Output: -7496