# DCP-275: Unmarried Persons Back to All Problems

Royel is the oldest man in the village named boyaliya. He is now at 500 years old. In the meantime his family become the largest family in the world. So, it is tough to him to know the number of unmarried persons in his family. **If one has no childs is considered as unmarrid person.** Your task to find the number of unmarried persons. Input -- First line for test cases **T**. Each test case there is given the tree of Royel family. In first line **n** for the number of family members and next **n-1** line contains the relation **a, b** means **a** is parent of **b**. Constraints: -- T<=100 1<n<=10000 1<=a,b<=n Output -- Each line print the numbers of unmarried child. Sample input -- 2 3 1 2 2 3 4 2 3 2 4 1 2 Sample output -- 1 2

### Problem Limits

 Language Time Limit (seconds) C 1.00 C++ 1.00 C++14 1.00 C# 2.00 Go 2.00 Java 2.00 JavaScript 2.00 Objective-C 2.00 Perl 2.00 PHP 2.00 Python 2.00 Python3 2.00 Ruby 2.00 VB.Net 2.00

# 142/255

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