package main

import (
	"bufio"
	"fmt"
	"os"
)

var w *bufio.Writer = bufio.NewWriter(os.Stdout);
var r *bufio.Reader = bufio.NewReader(os.Stdin);

func solve() {
	var N int; fmt.Fscan(r, &N);
}

func main() {
	defer w.Flush();
}