#include <bits/stdc++.h>
#ifdef dbg
#define D(...) fprintf(stderr, __VA_ARGS__)
#define DD(...) D("[Debug] "#__VA_ARGS__ " = "), \
              debug_helper::debug(__VA_ARGS__), D("\n")
#include "C:\Users\wsyear\Desktop\OI\templates\debug.hpp"
#else
#define D(...) ((void)0)
#define DD(...) ((void)0)
#endif
#define rep(i, j, k) for (int i = (j); i <= (k); ++i)
#define per(i, j, k) for (int i = (j); i >= (k); --i)
#define SZ(v) int((v).size())
#define ALL(v) (v).begin(),(v).end()
#define fi first
#define se second
using ll = long long;
using pii = std::pair<int, int>;
using pll = std::pair<ll, ll>;

template<class T> void chkmn(T &x, T y) { if (y < x) x = y; }
template<class T> void chkmx(T &x, T y) { if (y > x) x = y; }

using namespace std;

const int maxn = 10010;

int n, m, deg[maxn], a[] = {0, 1, 1, 0, 0, 1, 1, 1, 0, 1, 0};

int main() {
  // freopen("ce", "r", stdin);
  cin.tie(nullptr) -> ios::sync_with_stdio(false);
  cin >> n >> m;
  rep (i, 1, m) {
    int u, v;
    cin >> u >> v;
    deg[u]++, deg[v]++;
  }
  vector<int> cg;
  rep (i, 1, 9) if ((a[i] ^ deg[i]) & 1) cg.emplace_back(i);
  if (!SZ(cg)) return cout << "ok\n", 0;
  cout << "mark\n";
  if (SZ(cg) & 1) cg.emplace_back(11);
  assert(SZ(cg) / 2 <= 5);
  cout << SZ(cg) / 2 << '\n';
  rep (i, 0, SZ(cg) / 2 - 1) cout << cg[2 * i] << " " << cg[2 * i + 1] << '\n';
}