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: 2026 @ 9494 # 8161

Output: 3359


Input: Consider Input: 7671 # 7716 @ 5899 @ 2520 # 497 # 24 # 16 # 840 # 9556

Output: -2559


Input: Consider Input: 2492 # 1341 # 7370 @ 6010


Output: -209