Help me in solving LBC18 problem

My issue

what is the wrong with this code

My code

// Update the code below to solve this problem

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

int main() 
{
  int t;
  cin>>t; 
  while(t--)
  {
  int X, Y, Z;
  cin>>X>>Y>>Z;
   if(X<=3){
       cout<<X*12<<endl;
   }
   else {
       cout<<
   }
   }
return 0;
}

Learning course: Solve Programming problems using C++
Problem Link: CodeChef: Practical coding for everyone

listen bro you left an incomplete cout statement in the else block. You should provide an expression or value to print in the else block.

cout << “Provide an expression or value here” << endl;