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: 540 @ 8823 @ 1244 # 1696 # 889 # 6035 # 5113 @ 2513

Output: -613


Input: Consider Input: 1338 # 1595 # 824 @ 2157


Output: 1076