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: 1919 @ 7586 # 3931 @ 8451 # 8366

Output: 5659


Input: Consider Input: 9835 @ 3285 # 8713 # 3066

Output: 1341


Input: Consider Input: 400 @ 5428 # 8044 @ 5917 # 8343 # 636


Output: -5278