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: 9786 @ 7240 # 8099 @ 100 @ 4573 @ 5982 @ 9270 @ 9911 # 8249

Output: 30514


Input: Consider Input: 992 # 6304 @ 9489 # 6814 # 5448 @ 4565

Output: -3520


Input: Consider Input: 5948 # 6736 @ 4596 @ 2126


Output: 5934


