#pragma region Macros // #pragma GCC target("avx2") #pragma GCC optimize("O3") #include #include #define rep(i, n) for (int i = 0; i < (n); i++) #define rrep(i, n) for (int i = (n - 1); i >= 0; i--) #define ALL(v) v.begin(), v.end() #define endl "\n" #define popcount(bit) __builtin_popcount(bit) #define pb push_back #define eb emplace_back using namespace std; using namespace atcoder; using P = pair; using PL = pair; typedef long long ll; template inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; } template inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; } const int dx[4] = {1, 0, -1, 0}; const int dy[4] = {0, 1, 0, -1}; const int fx[8] = {0, 1, 1, 1, 0, -1, -1, -1}; const int fy[8] = {1, 1, 0, -1, -1, -1, 0, 1}; int main() { int n; cin >> n; vector> res(n, vector(n)); rep(i, n){ if(i < n/ 2){ res[i][n - i - 1] = 1; }else{ res[i][n - i - 1] = 2; } } for (int i = 1; i < n; i++)rep(j, i){ res[i][n-1-j] = 2; } rep(i, n)rep(j, n){ cout << res[i][j] << (j == n - 1 ? "\n" : ""); } }