Input Format
The first line contains an integer, , the number of students.
The  subsequent lines describe each student over  lines; the first line contains a student's name, and the second line contains their grade.
Constraints
• 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.

### Problem solution in python 2 programming language.

from __future__ import print_function
score_list = {}
for _ in range(input()):
name = raw_input()
score = float(raw_input())
if score in score_list:
score_list[score].append(name)
else:
score_list[score] = [name]
new_list = []
for i in score_list:
new_list.append([i, score_list[i]])
new_list.sort()
result = new_list
result.sort()
print (*result, sep = "\n")

#### second solution

a = [[raw_input(), float(raw_input())] for i in xrange(int(raw_input()))]
s = sorted(set([x for x in a]))
for name in sorted(x for x in a if x == s):
print name

### Problem solution in python 3 programming language.

a = [[ input(), float(input())] for i in xrange(int(input()))]
s = sorted(set([x for x in a]))
for name in sorted(x for x in a if x == s):
print name