wyh2000 and pupil

Problem Description

Young theoretical computer scientist wyh2000 is teaching his pupils.

Wyh2000 has n pupils.Id of them are from to .In order to increase the cohesion between pupils,wyh2000 decide to divide them into 2 groups.Each group has at least 1 pupil.

Now that some pupils don‘t know each other(if doesn‘t know ,then doesn‘t know ).Wyh2000 hopes that if two pupils are in the same group,then they know each other,and the pupils of the first group must be as much as possible.

Please help wyh2000 determine the pupils of first group and second group. If there is no solution, print "Poor wyh".

 

Input

In the first line, there is an integer indicates the number of test cases.

For each case, the first line contains two integers indicate the number of pupil and the number of pupils don‘t konw each other.

In the next m lines,each line contains 2 intergers <,indicates that don‘t know and don‘t know ,the pair will only appear once.

 

Output

For each case, output the answer.

 

Sample Input

2
8 5
3 4
5 6
1 2
5 8
3 5
5 4
2 3
4 5
3 4
2 4

 

Sample Output

5 3
Poor wyh

 

//468MS 4036K 1981 B C++  
#include <iostream>
#include <cstring>
#include <cmath>
#include <queue>
#include <stack>
#include <list>
#include <map>
#include <set>
#include <sstream>
#include <string>
#include <vector>
#include <cstdio>
#include <ctime>
#include <bitset>
#include <algorithm>
#define SZ(x) ((int)(x).size())
#define ALL(v) (v).begin(), (v).end()
#define foreach(i, v) for (__typeof((v).begin()) i = (v).begin(); i != (v).end(); ++ i)
#define REP(i,n) for ( int i=1; i<=int(n); i++ )
using namespace std;
typedef long long ll;
#define X first
#define Y second
typedef pair<ll,ll> pii;


const int N = 1e5+100;

int sz[N*2];
int sz2[N*2];
int fa[N*2];
int n,m;
void ini(){
        REP(i,2*n) fa[i] = i;
        REP(i,2*n) sz[i] = (i <= n);
        REP(i,2*n) sz2[i] = (i > n);
}
int getf(int x){
        return x == fa[x] ? x : fa[x] = getf(fa[x]);
}
bool same(int a,int b){
        return getf(a) == getf(b);
}
void Merge(int a,int b){
        int f1 = getf(a), f2 = getf(b);
        if(f1 == f2) return ;
        fa[f1] = f2;
        sz[f2] += sz[f1];
        sz2[f2] += sz2[f1];
}
int main(){
        int T;
        cin>>T;
        while(T--){
                scanf("%d%d",&n,&m);
                ini();
                bool flag = 0;
                REP(i,m){
                        int a,b;
                        scanf("%d%d",&a,&b);
                        if(flag) continue;
                        if(same(a,b) || same(a+n,b+n) ) flag = 1;
                        else Merge(a+n,b),Merge(a,b+n);
                }
                if( n < 2 || flag) puts("Poor wyh");
                else if(m == 0) printf("%d 1\n",n-1);
                else {
                        int ans = 0;
                        REP(i,n){
                                if( fa[i] == i) ans += min(sz[i],sz2[i]);
                        }
                        printf("%d %d\n",n-ans,ans);
                }

        }
}