#include using namespace std; typedef long long int ll; typedef pair P; typedef vector VI; typedef vector VVI; #define REP(i,n) for(ll i=0;i<(n);i++) #define ALL(v) v.begin(),v.end() template bool chmax(T &x, const T &y) {return (x bool chmin(T &x, const T &y) {return (x>y)?(x=y,true):false;}; constexpr ll MOD=1000000007; constexpr ll INF=2e18; int main(){ int n; cin >> n; VVI ans(n,VI(n,0)); REP(i,n/2)REP(j,n/2){ if(i==j){ ans[i*2][j*2+1]=1; ans[i*2+1][j*2]=2; ans[i*2+1][j*2+1]=2; } else if(i s; VI x(n,0), y(n,0); REP(i,n){ ll sum=0; REP(j,n){ cout << ans[i][j]; x[i]+=ans[i][j]; y[j]+=ans[i][j]; } cout << endl; } REP(i,n){ s.insert(x[i]); s.insert(y[i]); } //cout << s.size() << endl; return 0; }