#include <bits/stdc++.h>
using namespace std;
#define MOD 1e9 + 7
#define endl '\n'

int main()
{
    ios_base::sync_with_stdio(0); cin.tie(0);

    int n,m;

    cin >> n >> m;

    vector<vector<int> > adj(n);

    for(int i = 0;i < m;i++)
    {
        int a,b;
        cin >> a >> b;
        adj[a].push_back(b);
        adj[b].push_back(a);
    }

    queue<pair<pair<int,int>,int> > q;

    for(int i = 0;i < n;i++)
    {
        while(!q.empty()) q.pop();
        q.push({{i,i},1});
        while(!q.empty())
        {
            int st = q.front().first.first,p = q.front().first.second,sz = q.front().second;
            q.pop();
            if(p==st and sz>1 and sz%2==0){ cout << "Gay found!"; return 0; }
            if(p==st and sz>1) continue;
            for(int i = 0;i < adj[p].size();i++) q.push({{st,adj[p][i]},sz+1});
        }
    }

    cout << "Gay not found!";
}