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: 8603 @ 6832 @ 2275 # 7856

Output: 9854


Input: Consider Input: 331 # 9967 @ 21 @ 480 # 3926 @ 8770 @ 5909 @ 6288 # 1226

Output: 6680


Input: Consider Input: 1837 @ 4842 # 1682 @ 5953


Output: 10950