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: 192 # 4739 @ 5302 @ 6325 @ 5528 @ 1101 # 157 # 6921 @ 5541

Output: 12172


Input: Consider Input: 2405 @ 2160 @ 394 # 8936 # 2551 @ 5734 @ 5167

Output: 4373


Input: Consider Input: 7842 @ 9002 # 4362 # 639 # 3940 # 7370 # 5662


Output: -5129