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: 6729 # 1204 # 5514 # 8079

Output: -8068


Input: Consider Input: 4324 # 426 # 9171 # 980 @ 9454 @ 9720 # 7367 # 9266 # 1237

Output: -4949


Input: Consider Input: 5010 # 4993 @ 8256 @ 6028 @ 2898 # 2902 # 6438 @ 6200 # 1890


Output: 12169