92 lines
2.1 KiB
C++
92 lines
2.1 KiB
C++
#include<stdio.h>
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#include<iostream>
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#include<algorithm>
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#include<string>
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#include<string.h>
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#include<math.h>
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#include<limits.h>
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#include<time.h>
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#include<stdlib.h>
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#include<map>
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#include<queue>
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#include<set>
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#include<stack>
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#include<vector>
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#define LL long long
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using namespace std;
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int vis[100005];
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vector <int> v[100005];
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int bfs(int u)
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{
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queue <int> q;
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q.push(u);
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vis[u] = 0;
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int res[2] = {1, 0};
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while(!q.empty())
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{
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int tmp = q.front();
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q.pop();
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int len = v[tmp].size();
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for(int i = 0; i < len; i++)
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{
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if(vis[v[tmp][i]] == -1)
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{
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vis[v[tmp][i]] = !vis[tmp];
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q.push(v[tmp][i]);
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res[vis[v[tmp][i]]]++;
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}
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else if(vis[v[tmp][i]] == vis[tmp])
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return -1;
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}
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}
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return max(res[0], res[1]);
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}
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int main()
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{
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int T;
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while(~scanf("%d", &T))
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{
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while(T--)
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{
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int n, m;
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for(int i = 0; i < 100005; i++)
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v[i].clear();
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memset(vis, -1, sizeof vis);
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scanf("%d%d", &n, &m);
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for(int i = 0; i < m; i++)
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{
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int a, b;
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scanf("%d%d", &a, &b);
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v[a].push_back(b);
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v[b].push_back(a);
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}
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int ans = 0;
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for(int j = 1; j <= n; j++)
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{
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if(vis[j] == -1)
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{
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int tmp = bfs(j);
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if(tmp == -1)
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{
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ans = -1;
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break;
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}
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else
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{
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ans += tmp;
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}
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}
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}
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if(ans == -1 || (ans == n && n < 2))
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{
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puts("Poor wyh");
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}
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else if(ans != n)
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printf("%d %d\n", ans, n - ans);
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else
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printf("%d %d\n", ans - 1, n - ans + 1);
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}
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}
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return 0;
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}
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