#include <bits/stdc++.h>
using namespace std;
namespace mine {
long long qread() {
  long long ans = 0, f = 1;
  char c = getchar();
  while (c < '0' or c > '9') {
    if (c == '-') f = -1;
    c = getchar();
  }
  while ('0' <= c and c <= '9') ans = ans * 10 + c - '0', c = getchar();
  return ans * f;
}
void write(long long num) {
  if (num < 0) putchar('-'), num = -num;
  if (num >= 10) write(num / 10);
  putchar('0' + num % 10);
}
void write1(long long num) {
  write(num);
  putchar(' ');
}
void write2(long long num) {
  write(num);
  putchar('\n');
}
template <typename T>
inline bool chmax(T &a, const T &b) {
  return a < b ? a = b, 1 : 0;
}
template <typename T>
inline bool chmin(T &a, const T &b) {
  return a > b ? a = b, 1 : 0;
}
long long gcd(long long x, long long y) { return y ? gcd(y, x % y) : x; }
bool IN(long long x, long long l, long long r) { return l <= x and x <= r; }
void GG() {
  puts("-1");
  exit(0);
}
const double eps = 1e-8;
const int INF = 0x3f3f3f3f;
const int MOD = 1e9 + 7;
int mm(const int x) { return x >= MOD ? x - MOD : x; }
template <typename T>
void add(T &x, const int &y) {
  x = (x + y >= MOD ? x + y - MOD : x + y);
}
long long qpower(long long x, long long e, int mod = MOD) {
  long long ans = 1;
  while (e) {
    if (e & 1) ans = ans * x % mod;
    x = x * x % mod;
    e >>= 1;
  }
  return ans;
}
long long invm(long long x) { return qpower(x, MOD - 2); }
const int MM = 1e6 + 10;
long long fac[MM], facinv[MM], Inv[MM];
long long Comb(int n, int m) {
  return n < 0 or n < m ? 0 : fac[n] * facinv[m] % MOD * facinv[n - m] % MOD;
}
void PRE() {
  fac[0] = 1;
  for (int i = (1), I = (MM - 1); i <= I; i++) fac[i] = fac[i - 1] * i % MOD;
  facinv[MM - 1] = invm(fac[MM - 1]);
  for (int i = (MM - 1), I = (1); i >= I; i--)
    facinv[i - 1] = facinv[i] * i % MOD;
  Inv[1] = 1;
  for (int i = (2), I = (MM - 1); i <= I; i++)
    Inv[i] = (MOD - MOD / i) * Inv[MOD % i] % MOD;
}
const int N = 1e6 + 10;
int sq;
vector<int> ans;
bool ban[N];
vector<int> to[N];
int ff[N], dep[N];
void solve(int x, int fa) {
  ff[x] = fa, dep[x] = dep[fa] + 1;
  for (auto y : to[x])
    if (!dep[y])
      solve(y, x);
    else if (dep[x] - dep[y] >= sq - 1) {
      printf("2\n%d\n", dep[x] - dep[y] + 1);
      for (int now = x; now != y; now = ff[now]) write1(now);
      write1(y);
      exit(0);
    }
  if (!ban[x]) {
    ans.push_back(x);
    for (auto y : to[x]) ban[y] = 1;
  }
}
void main() {
  int n = qread(), m = qread();
  for (int i = (1), I = (m); i <= I; i++) {
    int x = qread(), y = qread();
    to[x].push_back(y), to[y].push_back(x);
  }
  sq = ceil(sqrt(n));
  solve(1, 0);
  puts("1");
  for (int i = (0), I = (sq - 1); i <= I; i++) write1(ans[i]);
}
};  // namespace mine
signed main() {
  srand(time(0));
  mine::PRE();
  mine::main();
  printf("");
}
