Background
Professor Hopper is researching the sexual behavior of a rare species of bugs. He assumes that they feature two different genders and that they only interact with bugs of the opposite gender. In his experiment, individual bugs and their interactions were easy to identify, because numbers were printed on their backs.

Problem

Input

The first line of the input contains the number of scenarios. Each scenario starts with one line giving the number of bugs (at least one, and up to 2000) and the number of interactions (up to 1000000) separated by a single space. In the following lines, each interaction is given in the form of two distinct bug numbers separated by a single space. Bugs are numbered consecutively starting from one.

Output

The output for every scenario is a line containing "Scenario #i:", where i is the number of the scenario starting at 1, followed by one line saying either "No suspicious bugs found!" if the experiment is consistent with his assumption about the bugs' sexual behavior, or "Suspicious bugs found!" if Professor Hopper's assumption is definitely wrong.

Sample Input

2
3 3
1 2
2 3
1 3
4 2
1 2
3 4

Sample Output

Scenario #1:
Suspicious bugs found!

Scenario #2:
No suspicious bugs found!

題意：

      給你n只蟲子，m對蟲子之間的關係，問他們之間是否存在同性戀。

思路：

     種類並查集的關鍵在於與結點與根結點的距離， 如果距離是奇數那麼性別就和跟結點相反，如果是偶數就和跟結點性別相同。我用r[x]記錄x與其父親節點的關係, r[x]=0表同性, rank[x]=1表異性。

程式碼：

#include<stdio.h>
int f[2020],r[2020],n,m;
void init()
{
	int i;
	for(i=1;i<=n;i++)
		f[i]=i;
	return;
}
int getf(int v)
{
	int t;
	if(f[v]==v)
		return v;
	else
	{
		t=f[v];
		f[v]=getf(f[v]);
		r[v]=(r[v]+r[t]+1)%2;
	}	
	return f[v];
}
void merge(int x,int y)
{
	int t1,t2;
	t1=getf(x);
	t2=getf(y);
	if(t1!=t2)
	{
		f[t2]=t1;
	}
	r[t2]=(r[y]-r[x])%2;
}
int main()
{
	int t,i,a,b,flag,c;
	scanf("%d",&t);	
	c=1;
	while(t--)
	{
		flag=0;
		scanf("%d%d",&n,&m);
		init();
		for(i=1;i<=n;i++)
			r[i]=1;
		for(i=1;i<=m;i++)
		{
			scanf("%d%d",&a,&b);
			if(getf(a)==getf(b))
			{
				if(r[a]==r[b])    //說明性別相同
					flag=1;
			}
			else
				merge(a,b);
		}
		if(flag)
			printf("Scenario #%d:\nSuspicious bugs found!\n\n",c++);
		else
			printf("Scenario #%d:\nNo suspicious bugs found!\n\n",c++);
	}
	return 0;
}