#include <bits/stdc++.h>
using namespace std;
const long long MAXN = 300 * 1000 + 7;
const long long MOD = 1000 * 1000 * 1000 + 7;
const long long INF = 1000000000000000 + 7;
const double PI = 2 * acos(0.0);
long long a, b, c;
int main(void) {
  cin >> a >> b >> c;
  if (a > b || a > c)
    cout << "No" << endl;
  else
    cout << "Yes" << endl;
  return 0;
}
