#include<map>
#include<set>
#include<cmath>
#include<queue>
#include<stack>
#include<vector>
#include<cstdio>
#include<cassert>
#include<iomanip>
#include<cstdlib>
#include<cstring>
#include<iostream>
#include<algorithm>
#define C 0.5772156649
#define pi acos(-1.0)
#define ll long long
#define mod 1000000007
#define ls l,m,rt<<1
#define rs m+1,r,rt<<1|1
#pragma comment(linker, "/STACK:1024000000,1024000000")

using namespace std;

const double g=10.0,eps=1e-7;
const int N=1000+10,maxn=1000+10,inf=0x3f3f3f;

stack<int>s;
int dfn[N],low[N];
int inans[N],ins[N];
int num,index;
int n,m;
int x[N],y[N];
vector<int>v[N];
void tarjan(int u)
{
    ins[u]=2;
    dfn[u]=low[u]=++index;
    s.push(u);
    for(int i=0;i<v[u].size();i++)
    {
        int x=v[u][i];
        if(dfn[x]==0)
        {
            tarjan(x);
            low[u]=min(low[u],low[x]);
        }
        else if(ins[x]==2)low[u]=min(low[u],dfn[x]);
    }
    if(dfn[u]==low[u])
    {
        ++num;
        while(!s.empty()){
            int k=s.top();
            s.pop();
            ins[k]=1;
            inans[k]=num;
            if(k==u)break;
        }
    }
}
int main()
{
    ios::sync_with_stdio(false);
    cin.tie(0);
    memset(inans,0,sizeof inans);
    memset(ins,0,sizeof ins);
    memset(dfn,0,sizeof dfn);
    memset(low,0,sizeof low);
    for(int i=1;i<=2*m;i++)v[i].clear();
    while(!s.empty())s.pop();
    index=num=0;
    cin>>n>>m;
    for(int i=1;i<=m;i++)
    {
        cin>>x[i]>>y[i];
        if(x[i]>y[i])swap(x[i],y[i]);
    }
    for(int i=1;i<=m;i++)
        for(int j=i+1;j<=m;j++)
            if((x[i] <= x[j] && y[i] >= x[j] && y[i] <= y[j]) || (x[i] >= x[j] && x[i] <= y[j] && y[i] >= y[j]))
            {
                v[2*i-1].push_back(2*j);
                v[2*j].push_back(2*i-1);
                v[2*j-1].push_back(2*i);
                v[2*i].push_back(2*j-1);
            }
    for(int i=1;i<=2*m;i++)
        if(!dfn[i])
           tarjan(i);
    bool f=0;
    for(int i=1;i<2*m;i+=2)
        if(inans[i]==inans[i+1])
        {
            f=1;
            break;
        }
    if(f)cout<<"the evil panda is lying again"<<endl;
    else cout<<"panda is telling the truth..."<<endl;
    return 0;
}
/********************

********************/