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: 7894 @ 7649 # 4792

Output: 10751


Input: Consider Input: 9673 @ 7136 # 4171 # 8296 @ 655

Output: 4997


Input: Consider Input: 9592 @ 2626 @ 2888 # 2890 @ 3396 # 6541 # 250


Output: 8821