1186A.cpp

#include<bits/stdc++.h>


using namespace std;

int main(){

    int n;
    int m;
    int k;

    cin>>n>>m>>k;

    if(n <= m && n<=k){
        cout<<"Yes"<<endl;
    }

    else{
        cout<<"No"<<endl;

    }


    return 0;
}