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: 7773 @ 3264 # 8041 @ 4068 # 5476 # 5946 # 8987 # 7719

Output: -21064


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

Output: 4997


Input: Consider Input: 6753 @ 6508 # 223


Output: 13038