#include <bits/stdc++.h>
using namespace std;
inline void open(const char *s) {}
inline int rd() {
  static int x, f;
  x = 0;
  f = 1;
  char ch = getchar();
  for (; ch < '0' || ch > '9'; ch = getchar())
    if (ch == '-') f = -1;
  for (; ch >= '0' && ch <= '9'; ch = getchar()) x = x * 10 + ch - '0';
  return f > 0 ? x : -x;
}
int n, m, k;
int main() {
  n = rd();
  m = rd();
  k = rd();
  if (n <= min(m, k))
    puts("Yes");
  else
    puts("No");
  return 0;
}
