#include #include #include #include #include #include #include #include #include #include #include #include #include #define debug_value(x) cerr << "line" << __LINE__ << ":<" << __func__ << ">:" << #x << "=" << x << endl; #define debug(x) cerr << "line" << __LINE__ << ":<" << __func__ << ">:" << x << endl; 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; } using namespace std; typedef long long ll; template vector> vec2d(int n, int m, T v){ return vector>(n, vector(m, v)); } template vector>> vec3d(int n, int m, int k, T v){ return vector>>(n, vector>(m, vector(k, v))); } template void print_vector(vector v, char delimiter=' '){ if(v.empty()) { cout << endl; return; } for(int i = 0; i+1 < v.size(); i++) cout << v[i] << delimiter; cout << v.back() << endl; } int main(){ ios::sync_with_stdio(false); cin.tie(0); cout << setprecision(10) << fixed; int h, w; cin >> h >> w; if(h%2 == 0 && w%2 == 0){ for(int i = 0; i < h; i++){ for(int j = 0; j < w; j++){ cout << 1 << ' '; } cout << endl; } return 0; } if(h%2 == 0 && w%2 == 1){ for(int i = 0; i < h; i++){ for(int j = 0; j < w-1; j++){ cout << 1 << ' '; } cout << 0 << endl; } return 0; } if(h%2 == 1 && w%2 == 0){ for(int i = 0; i < h-1; i++){ for(int j = 0; j < w; j++){ cout << 1 << ' '; } cout << endl; } for(int j = 0; j < w; j++) cout << 0 << ' '; cout << endl; return 0; } auto ans = vec2d(h, w, 1); for(int i = 0; i < min(h, w); i++) ans[i][i] = 0; for(int i = 0; i < h; i++) print_vector(ans[i]); }