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: 3935 # 7500 # 205 # 7262 # 5754 @ 116 # 8451 # 9591

Output: -34712


Input: Consider Input: 1837 @ 4842 # 1682 @ 5953

Output: 10950


Input: Consider Input: 8671 # 4816 @ 3192 @ 6202 # 1106


Output: 12143