#include <bits/stdc++.h>
using namespace std;
template <typename T, typename U>
inline void smin(T &a, U b) {
  if (a > b) a = b;
}
template <typename T, typename U>
inline void smax(T &a, U b) {
  if (a < b) a = b;
}
template <class T>
inline void gn(T &first) {
  char c, sg = 0;
  while (c = getchar(), (c > '9' || c < '0') && c != '-')
    ;
  for ((c == '-' ? sg = 1, c = getchar() : 0), first = 0; c >= '0' && c <= '9';
       c = getchar())
    first = (first << 1) + (first << 3) + c - '0';
  if (sg) first = -first;
}
template <class T1, class T2>
inline void gn(T1 &x1, T2 &x2) {
  gn(x1), gn(x2);
}
template <class T1, class T2, class T3>
inline void gn(T1 &x1, T2 &x2, T3 &x3) {
  gn(x1), gn(x2), gn(x3);
}
template <class T1, class T2, class T3, class T4>
inline void gn(T1 &x1, T2 &x2, T3 &x3, T4 &x4) {
  gn(x1), gn(x2), gn(x3), gn(x4);
}
template <class T>
inline void print(T first) {
  if (first < 0) {
    putchar('-');
    return print(-first);
  }
  if (first < 10) {
    putchar('0' + first);
    return;
  }
  print(first / 10);
  putchar(first % 10 + '0');
}
template <class T>
inline void printsp(T first) {
  print(first);
  putchar(' ');
}
template <class T>
inline void println(T first) {
  print(first);
  putchar('\n');
}
template <class T1, class T2>
inline void print(T1 x1, T2 x2) {
  printsp(x1), println(x2);
}
template <class T1, class T2, class T3>
inline void print(T1 x1, T2 x2, T3 x3) {
  printsp(x1), printsp(x2), println(x3);
}
template <class T1, class T2, class T3, class T4>
inline void print(T1 x1, T2 x2, T3 x3, T4 x4) {
  printsp(x1), printsp(x2), printsp(x3), println(x4);
}
int power(int a, int b, int m, int ans = 1) {
  for (; b; b >>= 1, a = 1LL * a * a % m)
    if (b & 1) ans = 1LL * ans * a % m;
  return ans;
}
int first[100010] = {2, 4, 1, 3}, second[100010] = {3, 1, 4, 2};
void pre(int n) {
  puts("YES");
  if (n < 5) return;
  int u = 1, v = 1;
  for (int i = 0; i < n; i += 2) first[i] = u++;
  for (int i = 1; i < n; i += 2) first[i] = u++;
  for (int i = 1; i < n; i += 2) second[i] = v++;
  for (int i = 0; i < n; i += 2) second[i] = v++;
}
int main() {
  int n, m;
  gn(n, m);
  if (n == 1 and m == 1) {
    puts("YES");
    puts("1");
    return 0;
  }
  if (n == 3 and m == 3) {
    puts("YES");
    puts("4 9 2");
    puts("3 5 7");
    puts("8 1 6");
    return 0;
  }
  if (n > m) {
    if (n < 4) {
      puts("NO");
      return 0;
    }
    pre(n);
    for (int i = 0; i < n; i++) {
      for (int j = 1; j <= m; j++) {
        if (j & 1)
          printsp((first[i] - 1) * m + j);
        else
          printsp((second[i] - 1) * m + j);
      }
      puts("");
    }
  } else {
    if (m < 4) {
      puts("NO");
      return 0;
    }
    pre(m);
    for (int i = 0; i < n; i++) {
      for (int j = 0; j < m; j++) {
        if (i & 1)
          printsp(first[j] + m * i);
        else
          printsp(second[j] + m * i);
      }
      puts("");
    }
  }
}
