Help me in solving LBC19 problem

help
,
1

My issue

what is missing or incorrect in the code

My code

// Update the code below to solve this problem

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

int main() 
{
  int t;
  cin>>t; 
  while(t--)
  {
  int N,X;
  cin>>N>>X;
  int income, amount;
  
  income = pow(X,2);
  
  int i = 1;
    do{
         amount = income - income/2;
         income = income/2;
         i++;
    }while(i<=N);
  
    cout<<amount<<endl;  
    
  
   }
  return 0;
}

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