govnina

package com.company;

import java.io.*;
import java.util.*;

public class MyScanner {

    private BufferedReader reader;

    public MyScanner( InputStream in ){
        reader = new BufferedReader( new InputStreamReader( in ) );
    }

    private String curString;

    Deque<Integer> ints = new LinkedList<Integer>();

    private String getCurString() throws IOException {
        return reader.readLine();
    }

    private boolean isNotDoubleCheck = true;
    private boolean isNotDoubleInt = true;

    public boolean hasNextLine() throws IOException {
        if( isNotDoubleCheck ){
            curString = getCurString();
        }
        isNotDoubleCheck = false;
        try {
            return !curString.isEmpty();
        } catch (NullPointerException ex){
            return false;
        }
    }


    public String nextLine() throws IOException {
        if( hasNextLine() ){
            isNotDoubleCheck = true;
            return curString;
        }
        else{
            isNotDoubleCheck = true;
            throw new NoSuchElementException( "Next line not found" );
        }

    }

    private void intIn()throws IOException {
        curString = getCurString();
        isNotDoubleInt=false;
        String strArr[] = curString.split(" ");
        int tmp;
        for (int i = 0; i < strArr.length; i++) {
            tmp= Integer.parseInt(strArr[i]);
            ints.push(tmp);
        }
    }

    public boolean hasNextInt() throws IOException{
        if(isNotDoubleInt)
            intIn();
        return !ints.isEmpty();
    }

    public int nextInt() throws IOException{
        if(isNotDoubleInt)
            intIn();
        if(hasNextInt())
            return ints.pop();
        else
            throw new NoSuchElementException( "Next int not found" );
    }
}