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: 2678 # 5467 @ 8355 # 3124 # 5654

Output: -3212


Input: Consider Input: 1294 # 4752 # 8113 @ 9201 @ 8582 # 7189 @ 2849

Output: 1872


Input: Consider Input: 4470 # 9810 @ 9883


Output: 4543


