#include <bits/stdc++.h>
    using namespace std;
    #include <math.h>
    #include <iomanip>
    #include <cstdint>
    #include <string>
    #include <sstream>
    
    template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; }
    template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; }
    #define rep(i,n) for (int i = 0; i < (n); ++i)

    typedef long long ll;
    typedef unsigned long long ull;
    using P=pair<ll,ll>;
    using tp=tuple<int,int,int,int>;
    const int INF=1001001001;
    const ll INFL=1e18;
    const int mod=1e9+7;
    
    void solve(){
        int i,j,k;
        cin>>i>>j>>k;
        cout<<(i<=j&&i<=k?"Yes":"No")<<endl;
    }

    int main(){
        ios_base::sync_with_stdio(false);
        cin.tie(NULL);
        
        solve();

        return 0;
    }