Nested Lists
Given the names and grades for each student in a Physics class of students, store them in a nested list and print the name(s) of any
student(s) having the second lowest grade.
Note: If there are multiple students with the same grade, order their names alphabetically and print each name on a new line.
Input Format
The first line contains an integer, N, the number of students.
The 2N subsequent lines describe each student over 2 lines; the first line contains a student's name, and the second line contains
their grade.
There will always be one or more students having the second lowest grade.
Output Format
Print the name(s) of any student(s) having the second lowest grade in Physics; if there are multiple students, order their names
alphabetically and print each one on a new line.
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