Friends ZOJ - 3710
Alice lives in the country where people like to make friends. The friendship is bidirectional and if any two person have no less than k friends in common, they will become friends in several days. Currently, there are totally n people in the country, and m friendship among them. Assume that any new friendship is made only when they have sufficient friends in common mentioned above, you are to tell how many new friendship are made after a sufficiently long time.
Input
There are multiple test cases.
The first lien of the input contains an integer T(about 100) indicating the number of test cases. Then T cases follow. For each case, the first line contains three integers n, m, k (1 ≤ n ≤ 100, 0 ≤ m ≤ n×(n-1)/2, 0 ≤ k ≤ n, there will be no duplicated friendship) followed by mlines showing the current friendship. The ithfriendship contains two integers ui, vi (0 ≤ ui, vi < n, ui ≠ vi) indicating there is friendship between person ui and vi.
Note: The edges in test data are generated randomly.
Output
For each case, print one line containing the answer.
Sample Input
3 4 4 2 0 1 0 2 1 3 2 3 5 5 2 0 1 1 2 2 3 3 4 4 0 5 6 2 0 1 1 2 2 3 3 4 4 0 2 0
Sample Output
2 0 4
题意： 如果两个人有不少于k个共同的朋友，他们也会成为朋友。
输入：T：测试用例的数量。第一行：n、m、k (1<= n<=100, 0 <=m<=n*(n-1)/2, 0<= k<= n）没有重复的友谊)。
n：一共有多少人。m行，表示当前的友谊。第i个友谊包含两个整数ui vi (0<=ui, vi 输出：新建的友谊有多少。
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