Kyselyt

 
// @author Anssi
 
import java.math.BigInteger;
import java.util.Scanner;
 
public class KyselytTehtava {
 
    private static int appendable = 0;
    private static StringBuilder myString;
    private static int charCount = 0;
 
    public static void main(String[] args) {
 
        Scanner input = new Scanner(System.in);
 
        myString = new StringBuilder(Integer.toString(appendable));
 
        int count = Integer.parseInt(input.nextLine());
        BigInteger[] queries = new BigInteger[count];
 
        for (int i = 0; i < count; i++) {
 
            queries[i] = new BigInteger(input.nextLine());
        }
 
 
        for (int i = 0; i < count; i++) {
 
            System.out.println(completeQuery(queries[i]));
        }
 
 
    }
 
    private static char completeQuery(BigInteger index) {
 
        charCount = 0;
        appendable = 0;
 
        int tempIndex = Integer.parseInt(index.toString());
 
        while (true) {
 
            if (charCount - tempIndex >= 0) {
 
                String tempString = Integer.toString(appendable);
                return tempString.charAt(tempString.length() - 1 - Integer.parseInt(BigInteger.valueOf(charCount).subtract(index).toString()));
            }
 
            charCount += Integer.toString(++appendable).length();
 
        }
    }
 
}

Test 1

Group: 1

Verdict: ACCEPTED

Test 2

Group: 2

Verdict: TIME LIMIT EXCEEDED

Test 3

Group: 3

Verdict: RUNTIME ERROR

Exception in thread "main" java.lang.NumberFormatException: For input string: "67227483294...