#include <bits/stdc++.h>

using i64 = long long;

const int P = 1E9 + 7;

const int N = 180;
std::vector<int> A[N];

std::vector<int> work(std::vector<int> a, std::vector<int> b) {
    const int n = a.size();
    std::vector<int> c(n);
    for (int i = 0; i < n; i++) {
        c[i] = a[b[i]];
    }
    return c;
}

int main() {
    std::ios::sync_with_stdio(false);
    std::cin.tie(nullptr);

    int n, m;
    std::cin >> n >> m;

    for (int i = 0; i < m; i++) {
        A[i].resize(n);
        for (int j = 0; j < n; j++) {
            std::cin >> A[i][j];
            A[i][j]--;
        }
    }

    std::set<std::vector<int>> S;
    for (int i = 0; i < m; i++) {
        auto t = S;
        for (auto &v : t) {
            S.insert(work(v, A[i]));
        }
        S.insert(A[i]);
    }
    std::cout << S.size() << "\n";

    return 0;
}