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: 6110 @ 5036 # 9621 @ 7662 # 3509 # 7697 # 1663 @ 9388

Output: 5706


Input: Consider Input: 6060 @ 2846 @ 4249 @ 6831 @ 5191 @ 3711 # 352 # 2921 @ 5640

Output: 31255


Input: Consider Input: 1930 # 7631 # 6614 @ 5805 @ 7376


Output: 866