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: 8678 @ 7424 # 7399 @ 4601 @ 9327 @ 7787 @ 2286

Output: 32704


Input: Consider Input: 2653 @ 9718 # 3237 @ 2973 # 6895 # 18

Output: 5194


Input: Consider Input: 2934 @ 5823 @ 4273 @ 8783 @ 7682 # 1861


Output: 27634