Problem: Petya studies positional notations. He has already learned to add and subtract numbers in the systems of notations with different radices and has moved on to a more complicated action — multiplication. To multiply large numbers one has to learn the multiplication table. Unfortunately, in the second grade students learn only the multiplication table of decimals (and some students even learn it in the first grade). Help Petya make a multiplication table for numbers in the system of notations with the radix k.

Input

The first line contains a single integer k (2 ≤ k ≤ 10) — the radix of the system.

Output

Output the multiplication table for the system of notations with the radix k. The table must contain k - 1 rows and k - 1 columns. The element on the crossing of the i-th row and the j-th column is equal to the product of i and j in the system of notations with the radix k. Each line may have any number of spaces between the numbers (the extra spaces in the samples are put for clarity).

Examples

Input

10


Output

1  2  3  4  5  6  7  8  9
2  4  6  8 10 12 14 16 18
3  6  9 12 15 18 21 24 27
4  8 12 16 20 24 28 32 36
5 10 15 20 25 30 35 40 45
6 12 18 24 30 36 42 48 54
7 14 21 28 35 42 49 56 63
8 16 24 32 40 48 56 64 72
9 18 27 36 45 54 63 72 81


Input

3


Output

1  2
2 11

Solution (in CPP):

Solution:
#include <bits/stdc++.h>
using namespace std;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
const long long mod = 1e9 + 7;
const long long inf = 1e18;
const long long dx[8] = {-1, 0, 1, 0, -1, 1, 1, -1},
                dy[8] = {0, 1, 0, -1, 1, 1, -1, -1};
const long long kdx[8] = {-2, -1, 1, 2, 2, 1, -1, -2},
                kdy[8] = {1, 2, 2, 1, -1, -2, -2, -1};
void _print(long long t) { cerr << t; }
void _print(string t) { cerr << t; }
void _print(char t) { cerr << t; }
void _print(long double t) { cerr << t; }
template <class T, class V>
void _print(pair<T, V> p);
template <class T>
void _print(vector<T> v);
template <class T>
void _print(set<T> v);
template <class T, class V>
void _print(map<T, V> v);
template <class T>
void _print(multiset<T> v);
template <class T, class V>
void _print(pair<T, V> p) {
  cerr << "{";
  _print(p.ff);
  cerr << ",";
  _print(p.ss);
  cerr << "}";
}
template <class T>
void _print(vector<T> v) {
  cerr << "[ ";
  for (T i : v) {
    _print(i);
    cerr << " ";
  }
  cerr << "]";
}
template <class T>
void _print(set<T> v) {
  cerr << "[ ";
  for (T i : v) {
    _print(i);
    cerr << " ";
  }
  cerr << "]";
}
template <class T>
void _print(multiset<T> v) {
  cerr << "[ ";
  for (T i : v) {
    _print(i);
    cerr << " ";
  }
  cerr << "]";
}
template <class T, class V>
void _print(map<T, V> v) {
  cerr << "[ ";
  for (auto i : v) {
    _print(i);
    cerr << " ";
  }
  cerr << "]";
}
long long n;
string go(long long a) {
  if (a == 0) return "0";
  string res = "";
  for (; a; a /= n) res += char(a % n + '0');
  reverse(res.begin(), res.end());
  return res;
}
void solve() {
  cin >> n;
  for (long long i = 1; i <= n - 1; ++i) {
    for (long long j = 1; j <= n - 1; ++j) {
      cout << go(i * j) << ' ';
    }
    cout << "\n";
  }
}
int32_t main() {
  clock_t start = clock();
  ios::sync_with_stdio(false);
  cin.tie(NULL);
  cout.tie(NULL);
  long long t = 1;
  for (long long i = 1; i <= t; ++i) {
    solve();
  }
  double duration = (clock() - start) / (double)CLOCKS_PER_SEC;
  cerr << duration << 's' << "\n";
  return 0;
}