#include <bits/stdc++.h>
using namespace std;
int main() {
  int n, m, k, x, y;
  cin >> n >> m >> k;
  x = m / (float)n;
  y = k / (float)n;
  if (1 <= x && 1 <= y) {
    cout << "Yes" << endl;
  } else
    cout << "No" << endl;
}
