#include <bits/stdc++.h>
using namespace std;
vector<int> s[100005];
int main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  cout.tie(0);
  int n, m, i, j, a, b;
  cin >> n >> m;
  if (n == 1 && m == 1) {
    cout << "YES\n" << 1;
  } else if (n == 1 && m == 2) {
    cout << "NO";
  } else if (n == 2 && m == 1) {
    cout << "NO";
  } else if (n == 1 && m == 3) {
    cout << "NO";
  } else if (n == 3 && m == 1) {
    cout << "NO";
  } else if (n == 1 && m == 4) {
    cout << "YES\n";
    cout << "2 4 1 3";
  } else if (n == 4 && m == 1) {
    cout << "YES\n";
    cout << "2\n4\n1\n3";
  } else if (n == 2 && m == 2) {
    cout << "NO";
  } else if ((n == 2 && m == 3) || (n == 3 && m == 2)) {
    cout << "NO";
  } else if (n == 3 && m == 3) {
    cout << "YES\n";
    cout << "6 1 8\n7 5 3\n2 9 4";
  } else if (n == 1 && m >= 5) {
    vector<int> res;
    for (i = 1; i <= m; i += 2) {
      res.push_back(i);
    }
    for (i = 2; i <= m; i += 2) {
      res.push_back(i);
    }
    cout << "YES\n";
    for (i = 0; i < m; i++) {
      cout << res[i] << " ";
    }
  } else if (n >= 5 && m == 1) {
    vector<int> res;
    for (i = 1; i <= n; i += 2) {
      res.push_back(i);
    }
    for (i = 2; i <= n; i += 2) {
      res.push_back(i);
    }
    cout << "YES\n";
    for (i = 0; i < n; i++) {
      cout << res[i] << "\n";
    }
  } else if (2 <= n && 4 <= m) {
    a = 1;
    for (i = 1; i <= n; i++) {
      for (j = 1; j <= m; j++) {
        s[i].push_back(a);
        a++;
      }
    }
    for (i = 2; i <= n; i += 2) {
      a = s[i][0];
      b = s[i][1];
      for (j = 0; j < m - 2; j++) {
        s[i][j] = s[i][j + 2];
      }
      s[i][m - 2] = a;
      s[i][m - 1] = b;
    }
    for (i = 1; i < m; i += 2) {
      a = s[1][i];
      for (j = 1; j <= n - 1; j++) {
        s[j][i] = s[j + 1][i];
      }
      s[n][i] = a;
    }
    cout << "YES\n";
    for (i = 1; i <= n; i++) {
      for (j = 0; j < m; j++) {
        cout << s[i][j] << " ";
      }
      cout << "\n";
    }
  } else {
    a = 1;
    for (i = 1; i <= n; i++) {
      for (j = 1; j <= m; j++) {
        s[i].push_back(a);
        a++;
      }
    }
    for (i = 1; i < m; i += 2) {
      a = s[1][i];
      b = s[2][i];
      for (j = 1; j <= n - 2; j++) {
        s[j][i] = s[j + 2][i];
      }
      s[n - 1][i] = a;
      s[n][i] = b;
    }
    for (i = 2; i <= n; i += 2) {
      a = s[i][0];
      for (j = 0; j < m - 1; j++) {
        s[i][j] = s[i][j + 1];
      }
      s[i][m - 1] = a;
    }
    cout << "YES\n";
    for (i = 1; i <= n; i++) {
      for (j = 0; j < m; j++) {
        cout << s[i][j] << " ";
      }
      cout << "\n";
    }
  }
  return 0;
}
