#include <cassert>
#include <cmath>
#include <cstdint>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <algorithm>
#include <bitset>
#include <complex>
#include <deque>
#include <functional>
#include <iostream>
#include <limits>
#include <map>
#include <numeric>
#include <queue>
#include <random>
#include <set>
#include <sstream>
#include <string>
#include <unordered_map>
#include <unordered_set>
#include <utility>
#include <vector>

using namespace std;

using Int = long long;

template <class T1, class T2> ostream &operator<<(ostream &os, const pair<T1, T2> &a) { return os << "(" << a.first << ", " << a.second << ")"; };
template <class T> ostream &operator<<(ostream &os, const vector<T> &as) { const int sz = as.size(); os << "["; for (int i = 0; i < sz; ++i) { if (i >= 256) { os << ", ..."; break; } if (i > 0) { os << ", "; } os << as[i]; } return os << "]"; }
template <class T> void pv(T a, T b) { for (T i = a; i != b; ++i) cerr << *i << " "; cerr << endl; }
template <class T> bool chmin(T &t, const T &f) { if (t > f) { t = f; return true; } return false; }
template <class T> bool chmax(T &t, const T &f) { if (t < f) { t = f; return true; } return false; }
#define COLOR(s) ("\x1b[" s "m")

////////////////////////////////////////////////////////////////////////////////
// Barrett
struct ModInt {
  static unsigned M;
  static unsigned long long NEG_INV_M;
  static void setM(unsigned m) { M = m; NEG_INV_M = -1ULL / M; }
  unsigned x;
  ModInt() : x(0U) {}
  ModInt(unsigned x_) : x(x_ % M) {}
  ModInt(unsigned long long x_) : x(x_ % M) {}
  ModInt(int x_) : x(((x_ %= static_cast<int>(M)) < 0) ? (x_ + static_cast<int>(M)) : x_) {}
  ModInt(long long x_) : x(((x_ %= static_cast<long long>(M)) < 0) ? (x_ + static_cast<long long>(M)) : x_) {}
  ModInt &operator+=(const ModInt &a) { x = ((x += a.x) >= M) ? (x - M) : x; return *this; }
  ModInt &operator-=(const ModInt &a) { x = ((x -= a.x) >= M) ? (x + M) : x; return *this; }
  ModInt &operator*=(const ModInt &a) {
    const unsigned long long y = static_cast<unsigned long long>(x) * a.x;
    const unsigned long long q = static_cast<unsigned long long>((static_cast<unsigned __int128>(NEG_INV_M) * y) >> 64);
    const unsigned long long r = y - M * q;
    x = r - M * (r >= M);
    return *this;
  }
  ModInt &operator/=(const ModInt &a) { return (*this *= a.inv()); }
  ModInt pow(long long e) const {
    if (e < 0) return inv().pow(-e);
    ModInt a = *this, b = 1U; for (; e; e >>= 1) { if (e & 1) b *= a; a *= a; } return b;
  }
  ModInt inv() const {
    unsigned a = M, b = x; int y = 0, z = 1;
    for (; b; ) { const unsigned q = a / b; const unsigned c = a - q * b; a = b; b = c; const int w = y - static_cast<int>(q) * z; y = z; z = w; }
    assert(a == 1U); return ModInt(y);
  }
  ModInt operator+() const { return *this; }
  ModInt operator-() const { ModInt a; a.x = x ? (M - x) : 0U; return a; }
  ModInt operator+(const ModInt &a) const { return (ModInt(*this) += a); }
  ModInt operator-(const ModInt &a) const { return (ModInt(*this) -= a); }
  ModInt operator*(const ModInt &a) const { return (ModInt(*this) *= a); }
  ModInt operator/(const ModInt &a) const { return (ModInt(*this) /= a); }
  template <class T> friend ModInt operator+(T a, const ModInt &b) { return (ModInt(a) += b); }
  template <class T> friend ModInt operator-(T a, const ModInt &b) { return (ModInt(a) -= b); }
  template <class T> friend ModInt operator*(T a, const ModInt &b) { return (ModInt(a) *= b); }
  template <class T> friend ModInt operator/(T a, const ModInt &b) { return (ModInt(a) /= b); }
  explicit operator bool() const { return x; }
  bool operator==(const ModInt &a) const { return (x == a.x); }
  bool operator!=(const ModInt &a) const { return (x != a.x); }
  friend std::ostream &operator<<(std::ostream &os, const ModInt &a) { return os << a.x; }
};
unsigned ModInt::M;
unsigned long long ModInt::NEG_INV_M;
// !!!Use ModInt::setM!!!
////////////////////////////////////////////////////////////////////////////////

using Mint = ModInt;


int N, P;
Mint G[510][510];

Mint g[510][510];
Mint ans[510][510];

struct Op {
  int typ;
  int i, j;
  Mint c;
};
vector<Op> ops;

// swap(v[i], v[j]);
void sw(int i, int j) {
// cerr<<COLOR("94")<<"sw "<<i<<" "<<j<<COLOR()<<endl;
  ops.push_back(Op{0, i, j, 0});
  for (int k = 0; k < N; ++k) swap(g[i][k], g[j][k]);
  for (int k = 0; k < N; ++k) swap(g[k][i], g[k][j]);
}

// v[i] += c v[j]
void add(int i, int j, Mint c) {
// cerr<<COLOR("91")<<"add "<<i<<" "<<j<<" "<<c<<COLOR()<<endl;
  assert(i != j);
  ops.push_back(Op{1, i, j, c});
  for (int k = 0; k < N; ++k) g[i][k] += c * g[j][k];
  for (int k = 0; k < N; ++k) g[k][i] += c * g[k][j];
}

int main() {
  for (; ~scanf("%d%d", &N, &P); ) {
    Mint::setM(P);
    memset(G, 0, sizeof(G));
    for (int i = 0; i < N; ++i) for (int j = 0; j < N; ++j) {
      scanf("%u", &G[i][j].x);
    }
#ifdef LOCAL
cerr<<string(80,'=')<<" N = "<<N<<", P = "<<P<<endl;
#endif
    
    vector<int> sqr(P, -1);
    for (int x = 0; x < P; ++x) {
      const int y = (Mint(x) * Mint(x)).x;
      if (!~sqr[y]) sqr[y] = x;
    }
    // z^2 + 1: quad. non-residue
    Mint z = 0;
    for (int x = 0; x < P; ++x) {
      const int y = (Mint(x) * Mint(x) + 1).x;
      if (!~sqr[y]) {
        z = x;
        break;
      }
    }
    
    const int N0 = N;
    for (; ; ) {
      memcpy(g, G, sizeof(G));
      memset(ans, 0, sizeof(ans));
      ops.clear();
      int h = 0;
      for (; ; ) {
#ifdef LOCAL
cerr<<__LINE__<<": h = "<<h<<endl;for(int i=0;i<N;++i)pv(g[i],g[i]+N);
#endif
        for (int i = h; i < N; ++i) {
          if (g[i][i]) {
            sw(h, i);
            break;
          }
        }
        if (h < N && g[h][h]) {
          const Mint s = g[h][h].inv();
          for (int i = h + 1; i < N; ++i) {
            add(i, h, -s * g[h][i]);
          }
          h += 1;
          continue;
        }
        for (int i = h; i < N; ++i) {
          for (int j = i + 1; j < N; ++j) {
            if (g[i][j]) {
              sw(h, i);
              sw(h + 1, j);
              goto found2;
            }
          }
        }
       found2:{}
        if (h + 1 < N && g[h][h + 1]) {
          if (P == 2) {
            if (h) {
              /*
                v0, v1, v2
                100
                001
                010
                
                v0 + v1 + v2, v0 + v1, v0 + v2
                100
                010
                001
              */
             add(h, h - 1, 1);
             add(h + 1, h - 1, 1);
             add(h - 1, h, 1);
             add(h - 1, h + 1, 1);
             h -= 1;
           } else {
              /*
                similarly to diagonalization:
                01
                10
                  ...
                     01
                     10
                
                need 1 more because:
                  det(v v^T) = det(G) = 1
                  ==> v: regular
                  ==> (1,0,...,0) = \sum[i \in I] v[i]
                  ==> norm is 1 = 0
              */
              G[N][N] = 1;
              ++N;
              goto failed;
            }
          } else {
            add(h, h + 1, 1);
          }
          continue;
        }
        break;
      }
      assert(h);
      
      {
        Mint det = 1;
        for (int i = 0; i < h; ++i) det *= g[i][i];
        if (!~sqr[det.x]) {
          /*
            need 1 more because:
              det(G) = det(v v^T) = det(v)^2 must be quad. residue
          */
          G[N][N] = det;
          ++N;
          goto failed;
        }
      }
      {
        vector<int> used(h, 0);
        for (int i = h; --i >= 0; ) if (!used[i]) {
          if (~sqr[g[i][i].x]) {
            used[i] = 1;
            ans[i][i] = sqr[g[i][i].x];
          } else {
            for (int j = i; --j >= 0; ) if (!used[j]) {
              if (~sqr[(g[j][j] * g[i][i]).x]) {
                used[j] = used[i] = 1;
                ans[j][j] = z;
                ans[j][i] = -1;
                ans[i][j] = 1;
                ans[i][i] = z;
                for (const int k : {j, i}) {
                  const Mint c = sqr[(g[k][k] / (z*z+1)).x];
                  ans[k][j] *= c;
                  ans[k][i] *= c;
                }
                break;
              }
            }
            assert(used[i]);
          }
        }
      }
      
      reverse(ops.begin(), ops.end());
      for (const Op &op : ops) {
        if (op.typ == 0) {
          for (int k = 0; k < h; ++k) swap(ans[op.i][k], ans[op.j][k]);
        } else if (op.typ == 1) {
          for (int k = 0; k < h; ++k) ans[op.i][k] -= op.c * ans[op.j][k];
        } else {
          assert(false);
        }
      }
      
      printf("%d\n", h);
      for (int i = 0; i < N0; ++i) {
        for (int k = 0; k < h; ++k) {
          if (k) printf(" ");
          printf("%u", ans[i][k].x);
        }
        puts("");
      }
#ifdef LOCAL
for(int i=N0;i<N;++i){cerr<<"ans["<<i<<"] = ";pv(ans[i],ans[i]+h);}
for(int i=0;i<N;++i)for(int j=0;j<N;++j){
 Mint dot=0;
 for(int k=0;k<h;++k)dot+=ans[i][k]*ans[j][k];
 if(G[i][j]!=dot){
  cerr<<i<<" "<<j<<": "<<G[i][j]<<" "<<dot<<endl;
  assert(false);
 }
}
#endif
      break;
     failed:{}
    }
  }
  return 0;
}