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: 497 # 7667 # 405 # 5403 @ 8444 @ 5031 # 1411 # 2392

Output: -3306


Input: Consider Input: 8929 # 6145 @ 8551 # 1836 @ 9159

Output: 18658


Input: Consider Input: 113 # 6449 # 8061 # 5583 @ 4951 @ 2656


Output: -12373