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: 5425 @ 6980 # 4301 @ 4410 # 7405 # 552 @ 4556 # 8531 # 4935

Output: -4353


Input: Consider Input: 8161 @ 9287 # 6233

Output: 11215


Input: Consider Input: 2813 # 1316 @ 8276 @ 4649 # 9291 @ 7773 # 8031 # 8735


Output: -3862