main.go

package main

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

func main() {
	var scanner = bufio.NewScanner(os.Stdin)
	scanner.Split(bufio.ScanRunes)
	var N int
	if scanner.Scan() {
		N, _ = strconv.Atoi(scanner.Text())
	}

	var wtr = bufio.NewWriter(os.Stdout)
	fmt.Fprintln(wtr, N)
	_ = wtr.Flush()
}