#include <iostream>
#include <string>
using namespace std;

int main()
   int N;
   cin>>N;
   
   if(N<1||N>10){
       cout<<"invalid input";
       return 0;
   }
   
   bool invalid = false;
   
   for (int i=0;i<++){
       string type;
       cin>type;
       
       if(type=="student"){
           string name;
           int grade;
           cin>>name>>grade;
           
           if(grade<1||grade>12){
               invalid=true;
               break;
           }
           
           cout<<"student:"<<name<<
           ",grade:"<<grade<<endl;
           
       }else if (type--"teacher"){
           string name,subject;
           cin>>name>>subject;
           
           cout<<"teacher:"<<name<<
           ",subject:"<<subject<<endl;
           
       }else{
           invalid=true;
           break;
       }
       
       if(invalid){
           cout<<"invalid input";
       }
       
       return 0;
   }