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: 1569 # 724 @ 3737 @ 6220 # 1360 # 172 # 1027 # 3566 # 9663

Output: -4986


Input: Consider Input: 9817 @ 5042 # 1724 @ 799 @ 685

Output: 14619


Input: Consider Input: 8676 # 6135 # 4358 # 3645


Output: -5462