CSV Files

Lab Python Intermediate 20 points

Read n lines name,score and write them to scores.csv with a header row using csv.writer. Then read it with csv.DictReader and print the name with the highest score and the average score with 1 decimal.

Input

Line 1: n. Then n lines name,score.

Output

Two lines.

Example

Input

3
ann,88
bob,95
cy,70

Output

bob
84.3

Sample input available Sample output available

Editor

Python

Hints

csv.writer(f).writerow(list) writes one row.

csv.DictReader gives each row as a dict keyed by the header.

Solution explanation

The csv module handles quoting and commas inside values correctly - don't split CSV by hand in real code.

Show solution

import csv

n = int(input())
with open("scores.csv", "w", newline="") as f:
    writer = csv.writer(f)
    writer.writerow(["name", "score"])
    for _ in range(n):
        writer.writerow(input().split(","))

with open("scores.csv", newline="") as f:
    rows = list(csv.DictReader(f))
best = max(rows, key=lambda r: int(r["score"]))
print(best["name"])
print(f"{sum(int(r['score']) for r in rows) / len(rows):.1f}")

Output

Answer