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: 353 # 799 @ 4824 # 3212 @ 1811 @ 752
Example Output: 3729

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

Example Input: 4187 # 110 @ 1825 # 7557
Example Output:
-1655