#815. Average score of students
You get n lines `name score` (one student can have many scores). Print each student's average as `name average` (1 decimal place), with the names in alphabetical order.
### Input
n, then n lines.
### Output
Lines.
Examples
Input
8 bat 75 bat 81 bat 7 bat 58 anu 33 tuya 63 saraa 70 tuya 66
Output
anu 33.0 bat 55.2 saraa 70.0 tuya 64.5
Input
7 bat 20 bat 16 anu 31 anu 58 tuya 16 anu 67 bat 92
Output
anu 52.0 bat 42.7 tuya 16.0
💡 You can solve it with Python, JavaScript or blocks. Read the input line by line with input(). Don't print a question (like input("Number: ")). Print exactly what the output asks for, nothing more.