#include<iostream>
#include<sstream>
#include<iomanip>
#include<limits>
using namespace std;

int main(){
    int n;
    cin>>n;
    if(cin.fail()||n<=0){
        cout << "Invalid input";
        return 0;
    }
    cin.ignore(numeric_limits<streamsize>::max(),'\n');
    
    string topStduent;
    double highestAvg=-1;
    
    for(int i=0;i<n;i++){
        string line;
        getline(cin, line);
        
        if (line.empty()){
            cout << "Invalid input";
            return 0;
        }
        stringstream ss(line);
        string name;
        ss>>name;
        
        int score;
        int count=0;
        int sum=0;
        
        while (ss>>score){
            if (score<0){
                cout<<"Invalid input";
                return 0;
            }
            sum +=score;
            count++;
        }
        if(count==0||ss.fail()&&!ss.eof()){
            cout<<"Invalid input";
            return 0;
        }
        double avg=(double)sum/count;
        if(avg>highestAvg){
            highestAvg=avg;
            topStduent=name;
        }
    }
    cout<<topStduent<<endl;
    cout<<fixed<<setprecision(2)<<highestAvg;
    return 0;
}
}