if __name__ == '__main__':
x = input().split()
a = [int(i) for i in x]
if a[0] <= a[1] and a[0] <= a[2]:
print("Yes")
else:
print("No")
#include <bits/stdc++.h>
using namespace std;
long long bpow(auto a,auto b){
if(b==0){
return 1;
}
else if(b&1){
return bpow(a,b-1)*a;
}
else{
auto B=bpow(a,b/2);
return B*B;
}
}
int main (){
int a,b,c;
cin>>a>>b>>c;
if(b>=a&&c>=a){
cout<<"YES"<<endl;
}
else{
cout<<"NO"<<endl;
}
}
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