#include <bits/stdc++.h>

#define File(a) freopen(a ".in", "r", stdin), freopen(a ".out", "w", stdout)

using uint = unsigned;
using ll = long long;
using ull = unsigned long long;
using pii = std::pair<int, int>;

const int N = 505;
const int Mod = 998244353;

void inc(int &a, int b) { (a += b) >= Mod ? a -= Mod : a; }
void dec(int &a, int b) { (a -= b) < 0 ? a += Mod : a; }

int pow(int a, int b, int ans = 1);
int rank();

std::mt19937_64 rnd(std::random_device{}());
std::uniform_int_distribution<int> D(0, Mod - 1);
int mat[N][N];
int n, m;

int main() {
  scanf("%d %d", &n, &m);
  for (int i = 1; i <= m; ++i) {
    int u, v, w;
    scanf("%d %d %d", &u, &v, &w);
    int x = D(rnd);
    inc(mat[u][v], x), inc(mat[v][w], x), inc(mat[w][u], x);
    dec(mat[v][u], x), dec(mat[w][v], x), dec(mat[u][w], x);
  }
  printf("%d\n", rank() / 2);
  return 0;
}

int rank() {
  int ans = 0;
  for (int i = 1; i <= n; ++i) {
    int now = 0;
    for (int j = ans + 1; j <= n; ++j) {
      if (mat[j][i]) now = j;
    }
    if (!now) continue;
    ++ans;
    if (now != ans) std::swap(mat[ans], mat[now]);
    int iv = pow(mat[ans][i], Mod - 2);
    for (int j = i; j <= n; ++j) mat[ans][j] = 1ll * mat[ans][j] * iv % Mod;
    for (int j = ans + 1; j <= n; ++j) {
      for (int k = n; k >= i; --k) mat[j][k] = (mat[j][k] + 1ll * (Mod - mat[j][i]) * mat[ans][k]) % Mod;
    }
  }
  return ans;
}

int pow(int a, int b, int ans) {
  while (b) {
    if (b & 1) ans = 1ll * ans * a % Mod;
    a = 1ll * a * a % Mod;
    b >>= 1;
  }
  return ans;
}