#include<bits/stdc++.h>
using namespace std;
int n;
string s;
bool ok=1;
int main()
{
    cin>>n>>s;
    for(int i=0;i<n;i++)
    {
        if(s[i]=='o'&&s[i+1]=='o'&&s[i+2]=='o')
            ok=0;
    }
    if(ok)
        cout<<"Robot";
    else 
        cout<<"Human";
    return 0;
}

#include<bits/stdc++.h>
using namespace std;
int n,sum;
char a[100086];
int main()
{
    cin>>n;
    for(int i=1;i<=n;i++){
        cin>>a[i];
        if(a[i]=='o') sum++;
        if(a[i]=='x') sum=0;
        if(sum==3){
            cout<<"Human";
            return 0;
        }  
    }
    cout<<"Robot";
}