#include <bits/stdc++.h>
using namespace std;
long long power(long long i, long long j) {
  if (j == 0) return 1;
  long long t = power(i, j / 2) % 1000000007;
  if (j % 2 == 0)
    return (t % 1000000007 * t % 1000000007) % 1000000007;
  else
    return ((t % 1000000007 * t % 1000000007) % 1000000007 * (i % 1000000007) %
            1000000007) %
           1000000007;
}
bool is(long long i) {
  if (i == 1) return 0;
  long long f = 0;
  for (long long j = 2; j <= sqrt(i); j++) {
    if (i % j == 0) {
      f = 1;
      break;
    }
  }
  return !f;
}
int main() {
  long long a, b, c;
  cin >> a >> b >> c;
  if (a <= min(b, c))
    cout << "Yes";
  else
    cout << "No";
}
