#include using namespace std; #define FOR(i,m,n) for(int i=(m);i<(n);++i) #define REP(i,n) FOR(i,0,n) using ll = long long; constexpr int INF = 0x3f3f3f3f; constexpr long long LINF = 0x3f3f3f3f3f3f3f3fLL; constexpr double EPS = 1e-8; constexpr int MOD = 998244353; // constexpr int MOD = 1000000007; constexpr int DY4[]{1, 0, -1, 0}, DX4[]{0, -1, 0, 1}; constexpr int DY8[]{1, 1, 0, -1, -1, -1, 0, 1}; constexpr int DX8[]{0, -1, -1, -1, 0, 1, 1, 1}; template inline bool chmax(T& a, U b) { return a < b ? (a = b, true) : false; } template inline bool chmin(T& a, U b) { return a > b ? (a = b, true) : false; } struct IOSetup { IOSetup() { std::cin.tie(nullptr); std::ios_base::sync_with_stdio(false); std::cout << fixed << setprecision(20); } } iosetup; int main() { int n, m; cin >> n >> m; vector a(1 << n, vector(1 << m, 0)); for (int i = 0, a_ij = 0; i < (1 << n); i += 2) { for (int j = 0; j < (1 << m); j += 2) { a[i][j] = a_ij++; a[i][j + 1] = a_ij++; a[i + 1][j] = a_ij++; a[i + 1][j + 1] = a_ij++; } } for (const vector& a_i : a) { REP(j, 1 << m) cout << a_i[j] << " \n"[j + 1 == (1 << m)]; } return 0; }