#include <bits/stdc++.h>
using namespace std;
bool ok(int n) {
  if (1) {
    return true;
  }
  return false;
}
void solve() {
  int n, m, k;
  cin >> n >> m >> k;
  if (n <= m && n <= k) {
    cout << "Yes";
  } else {
    cout << "No";
  }
}
int main() {
  int q = 1;
  while (q--) solve();
  return 0;
}
