Java competitive programming template

Main.java

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

public class Main {
    public static void main(String[] args) {
        InputReader in = new InputReader(System.in);
        PrintWriter out = new PrintWriter(System.out);
        new Task().solve(in, out);
        out.close();
    }

    private static class Task {
        private void solve(InputReader in, PrintWriter out) {
            final int n = 1; // NOTE: write if needed
            for (int it = 0; it < n; it++) {
                solveOne(in, out);
            }
        }

        private void solveOne(InputReader in, PrintWriter out) {
            // TODO: write code here
        }
    }

    private static 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());
        }
    }
}