#include <bits/stdc++.h>
using namespace std;
template <class t>
void read(t a) {
  cin >> a;
}
template <class t>
void read(vector<t> &a) {
  for (auto &b : a) cin >> b;
}
template <class t>
void read(vector<pair<t, t>> &a) {
  for (auto &b : a) cin >> b.first >> b.second;
}
template <class t>
void read(vector<array<t, 2>> &a) {
  for (auto &b : a) cin >> b[0] >> b[1];
}
template <class t>
void read(vector<array<t, 3>> &a) {
  for (auto &b : a) cin >> b[0] >> b[1] >> b[2];
}
template <class t>
void read(vector<array<t, 4>> &a) {
  for (auto &b : a) cin >> b[0] >> b[1] >> b[2] >> b[3];
}
template <class t>
void print(t a) {
  cout << a << "\n";
}
void solve() {
  int n, m, k;
  cin >> n >> m >> k;
  if (m >= n && k >= n) {
    cout << "Yes";
  } else {
    cout << "No";
  }
}
int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(0);
  solve();
}
