# A problem of sorting

Time Limit: 2000/1000 MS (Java/Others)

Memory Limit: 65536/65536 K (Java/Others)

## Description

There are many people's name and birth in a list.Your task is to print the name from young to old.(There is no pair of two has the same age.)

## Input

First line contains a single integer $T \leq 100$ which denotes the number of test cases.

For each test case, there is an positive integer $n (1 \leq n \leq 100)$ which denotes the number of people,and next $n$ lines,each line has a name and a birth's year(1900-2015) separated by one space.

The length of name is positive and not larger than $100$.Notice name only contain letter(s),digit(s) and space(s).

## Output

For each case, output $n$ lines.

## Sample Input

2
1
FancyCoder 1996
2
FancyCoder 1996
xyz111 1997

## Sample Output

FancyCoder
xyz111
FancyCoder

hujie

## Source

BestCoder Round #54 (div.2)