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

Example Input: 720 # 1309 @ 989 @ 1211 # 5749 # 7 @ 3147 # 9792 # 1243
Example Output: -12033

Example Input: 2186 # 2436 # 4269 # 2175 @ 4101 # 2723 @ 6192 # 7530
Example Output: -6654

Example Input: 7363 @ 2503 @ 6389 # 3308 # 2920 # 1005
Example Output:
9022