#define _GLIBCXX_DEBUG #include <bits/stdc++.h> //#include <atcoder/all> using ll = long long; using ld = long double; #define FOR(i, a, b) for(ll i = (ll)(a); i < (ll)(b); i++) #define rep(i, n) FOR(i, 0, n) #define rFOR(i, a, b) for(ll i = (ll)(a - 1); i >= (ll)(b); i--) #define rrep(i, a) rFOR(i, a, 0) #define all(c) begin(c),end(c) using namespace std; typedef pair<ll,ll> P; typedef vector<ll> vl; typedef vector<vl> vvl; typedef vector<P> vP; const ll MOD = 1000000007; const ll MOD2 = 998244353; const ld PI = acos(-1); const ll INF = 1e18; struct edge{ll to, cost;}; template <typename T> bool chmax(T &a, const T &b) { if (a < b) { a = b; return true; } return false; } template <typename T> bool chmin(T &a, const T &b) { if (a > b) { a = b; return true; } return false; } int main() { ios::sync_with_stdio(false); cin.tie(nullptr); int V,D; cin >> V >> D; if(D==1){ rep(i,V){ rep(j,V){ cout << 1; } cout << endl; } } else{ rep(i,V){ rep(j,V){ cout << (min(i,j)==0?1:0); } cout << endl; } } }