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: 6267 @ 3304 @ 9078 @ 9734 # 2947 # 4223 @ 4824 # 3116

Output: 22921


Input: Consider Input: 6420 @ 6956 @ 9478 # 4046

Output: 18808


Input: Consider Input: 2226 # 7329 # 3547


Output: -8650