JAVA IO类

import java.io.*;import java.math.BigDecimal;import java.math.BigInteger;import java.util.ArrayList;import java.util.Arrays;import java.util.Comparator;import java.util.HashSet;import java.util.Iterator;import java.util.List;import java.util.PriorityQueue;import java.util.Queue;import java.util.Scanner;import java.util.StringTokenizer;import java.util.TreeSet;public class Main {public static void main(String[] args) {InputStream inputStream = System.in;OutputStream outputStream = System.out;InputReader in = new InputReader(inputStream);PrintWriter out = new PrintWriter(outputStream);new TaskC().solve(in, out);out.close();}}class TaskC {static final long mod=1000000007;static final int maxn=100005;public void solve(InputReader in,PrintWriter out) {}class Pair implements Comparable<Pair>{}}class InputReader {    public BufferedReader reader;    public StringTokenizer tokenizer;    public InputReader(InputStream stream) {        reader = new BufferedReader(new InputStreamReader(stream), 32768);        tokenizer = null;    }    public String next() {        while (tokenizer == null || !tokenizer.hasMoreTokens()) {            try {                tokenizer = new StringTokenizer(reader.readLine());            } catch (IOException e) {                throw new RuntimeException(e);            }        }        return tokenizer.nextToken();    }    public int nextInt() {        return Integer.parseInt(next());    }        public long nextLong() {    return Long.parseLong(next());    }        public double nextDouble() {    return Double.parseDouble(next());    }        public boolean hasNext() {    return  new Scanner(System.in).hasNext();    }}