I found my error, it was a dumb mistake.

I am getting WA for test cases 4 and 6

import java.util.*;
 
class Main
{
        public static void main(String args[])
        {
            Scanner sc = new Scanner(System.in);
         
            int n = sc.nextInt();
            int h = sc.nextInt();
            int crane[] = new int[n];
            for(int i =0;i<n;i++)
            {
                crane[i] = sc.nextInt();
            }
            
            int current_pos = 0;
            boolean has_box = false;
            
            while(true)
            {
                int input = sc.nextInt();
                
                if(current_pos != 0 && input == 1)
                {
                    current_pos--;
                }
                if(current_pos != n-1 && input ==2)
                {
                    current_pos++;
                }
                if(has_box == false && input == 3)
                {
                    has_box = true;
                    if(crane[current_pos]!=0)
                    crane[current_pos] = crane[current_pos] - 1;
                }
                
                if(has_box == true&& input==4&&crane[current_pos]<h)
                {
                    has_box = false;
                    crane[current_pos] = crane[current_pos] + 1;
                }
                
                if(input==0)
                {
                    break;
                }
            }
            
            for(int i =0;i<n;i++)
            {
                System.out.print(crane[i]+" ");
            }
         
        }
}