#include <bits/stdc++.h>
#pragma comment(linker, "/STACK:1024000000,1024000000")
using namespace std;
const int INF = 0x3f3f3f3f;
const long long LINF = 0x3f3f3f3f3f3f3f3fLL;
const int dx[] = {-1, 0, 1, 0, 1, -1, -1, 1};
const int dy[] = {0, 1, 0, -1, -1, 1, -1, 1};
const int maxn = 5e3 + 10;
const int maxx = 1e5 + 10;
const double EPS = 1e-8;
const double eps = 1e-8;
const int mod = 1e9 + 7;
template <class T>
inline T min(T a, T b, T c) {
  return min(min(a, b), c);
}
template <class T>
inline T max(T a, T b, T c) {
  return max(max(a, b), c);
}
template <class T>
inline T min(T a, T b, T c, T d) {
  return min(min(a, b), min(c, d));
}
template <class T>
inline T max(T a, T b, T c, T d) {
  return max(max(a, b), max(c, d));
}
template <class T>
inline bool scan_d(T &ret) {
  char c;
  int sgn;
  if (c = getchar(), c == EOF) return 0;
  while (c != '-' && (c < '0' || c > '9')) c = getchar();
  sgn = (c == '-') ? -1 : 1;
  ret = (c == '-') ? 0 : (c - '0');
  while (c = getchar(), c >= '0' && c <= '9') ret = ret * 10 + (c - '0');
  ret *= sgn;
  return 1;
}
inline bool scan_lf(double &num) {
  char in;
  double Dec = 0.1;
  bool IsN = false, IsD = false;
  in = getchar();
  if (in == EOF) return false;
  while (in != '-' && in != '.' && (in < '0' || in > '9')) in = getchar();
  if (in == '-') {
    IsN = true;
    num = 0;
  } else if (in == '.') {
    IsD = true;
    num = 0;
  } else
    num = in - '0';
  if (!IsD) {
    while (in = getchar(), in >= '0' && in <= '9') {
      num *= 10;
      num += in - '0';
    }
  }
  if (in != '.') {
    if (IsN) num = -num;
    return true;
  } else {
    while (in = getchar(), in >= '0' && in <= '9') {
      num += Dec * (in - '0');
      Dec *= 0.1;
    }
  }
  if (IsN) num = -num;
  return true;
}
void Out(long long a) {
  if (a < 0) {
    putchar('-');
    a = -a;
  }
  if (a >= 10) Out(a / 10);
  putchar(a % 10 + '0');
}
void print(long long a) { Out(a), puts(""); }
int n, d, k, sum;
vector<pair<int, int> > ans;
void dfs(int u, int dep, int maxdep) {
  if (dep == maxdep) return;
  for (int i = 0; i < k - 1 - (dep == 0) && sum < n; i++) {
    ans.push_back(make_pair(u, ++sum));
    dfs(sum, dep + 1, maxdep);
  }
}
int main() {
  scanf("%d%d%d", &n, &d, &k);
  if (n > (1 - pow(k, d)) / (1 - k)) {
    puts("NO");
    return 0;
  }
  for (int i = 1; i <= d; i++) ans.push_back(make_pair(i, i + 1));
  sum = d + 1;
  for (int i = 2; i <= d; i++) dfs(i, 0, min(i - 1, d - i + 1));
  if (sum < n) {
    puts("NO");
    return 0;
  }
  puts("YES");
  for (int i = 0; i < ans.size(); i++)
    printf("%d %d\n", ans[i].first, ans[i].second);
}
