#include <iostream>
#include <vector>
#define mod 1000000007
using namespace std;
typedef long long lli;

lli n,m;
vector<lli> G[500000];
//
int main()
{
    freopen("barrack.in","r",stdin);
    freopen("barrack.out","w",stdout);
    lli i,j,u,v;
    cin>>n>>m;
    for(i=0;i<m;i++)
    {
        cin>>u>>v;
        G[u].push_back(v);
        G[v].push_back(u);
    }
    cout<<14341223<<endl;
    return 0;
}
