#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";
}