empty.md

title
Find the Student with the Highest Grade

Problem Statement

Given a list of student names and their grades, find the name of the student with the highest grade. If multiple students have the same highest grade, return the lexicographically smallest name among them.

Input Format:
A semicolon-separated list of student name-grade pairs in the format name,grade. Each pair is separated by a semicolon.

Output Format:
The name of the student with the highest grade.

Sample Input

Alice,85;Bob,92;Charlie,92;David,88

Sample Output

Bob

Explanation

The highest grade is 92, and the students with this grade are Bob and Charlie. Among them, "Bob" is lexicographically smaller.

Solution

<prefix>
def highest_grade_student(data: str) -> str:
    '''
    Return the name of the student with the highest grade.
    '''
</prefix>
<template>
    students = [tuple(item.split(',')) for item in data.split(';')]
    max_grade = max(int(grade) for _, grade in students)
    top_students = [name for name, grade in students if int(grade) == max_grade]
    return <sol>min(top_students)</sol><los>...</los>
</template>
<suffix>
data = input().strip()
print(highest_grade_student(data))
</suffix>

Public Test Cases

Input 1

Alice,85;Bob,92;Charlie,92;David,88

Output 1

Bob

Input 2

Emma,75;Liam,90;Olivia,90;Sophia,90

Output 2

Liam

Input 3

John,50;Jane,75;Doe,75;Adam,40

Output 3

Doe

Private Test Cases

Input 1

Michael,80;Sarah,95;Alex,95;Zara,85

Output 1

Alex

Input 2

Aaron,100;Zoe,100;Clara,99

Output 2

Aaron

Input 3

Isabella,0

Output 3

Isabella