Help me in solving PREQ22 problem

general
, ,
1

My issue

give explanation and some solution

My code

import java.util.Scanner;

class Codechef {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        
        // Read the number of test cases
        int T = 0;
        if (scanner.hasNextInt()) {
            T = scanner.nextInt();
        }
        
        for (int t = 0; t < T; t++) {
            // Check if there is another integer to read
            if (scanner.hasNextInt()) {
                int X = scanner.nextInt();
                int minIncorrect = Integer.MAX_VALUE;

                // Iterate over possible number of correct answers
                for (int c = 0; c <= 100; c++) {
                    int i = 3 * c - X;
                    if (i >= 0 && c + i <= 100) {
                        minIncorrect = Math.min(minIncorrect, i);
                    }
                }

                System.out.println(minIncorrect);
            } else {
                System.out.println("Input error");
            }
        }

        scanner.close();
    }
}

Learning course: Design and Analysis of Algorithms
Problem Link: https://www.codechef.com/learn/course/kl-daa/KLDAA24PRE02/problems/PREQ22