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: 4400 @ 9261 @ 3016

Output: 16677


Input: Consider Input: 9629 @ 3687 @ 328

Output: 13644


Input: Consider Input: 4725 # 7780 @ 1028 # 6858 @ 9194 @ 4680 # 3421 @ 362 # 8573


Output: -6643