2 输入输出

package main
import (
    "bufio"
    "os"
    "strconv"
)
func main() {
    scanner := bufio.NewScanner(os.Stdin)
    scanner.Split(bufio.ScanWords)
    writer := bufio.NewWriter(os.Stdout)
    defer writer.Flush()
    scanner.Scan()
    n, _ := strconv.Atoi(scanner.Text())
    arr := make([]int, n)
    for i := range n {
        scanner.Scan()
        arr[i], _ = strconv.Atoi(scanner.Text())
    }
    for i := range n {
        writer.WriteString(strconv.Itoa(arr[i]))
        writer.WriteByte('\n')
    }
}