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: 730 @ 7585 # 9902 # 6809 @ 286 @ 9412 @ 9282 # 3941 # 4046

Output: 2597


Input: Consider Input: 1649 # 3939 # 8990 # 612 # 6049 # 7337


Output: -25278