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: 524 @ 1123 # 5900 # 4128 # 1486 # 9545

Output: -19412


Input: Consider Input: 9924 @ 6266 # 7022 # 7976 # 2541 @ 5396

Output: 4047


Input: Consider Input: 1882 @ 6243 @ 3923


Output: 12048


