package main

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

func main() {
	reader := bufio.NewReader(os.Stdin)
	writer := bufio.NewWriter(os.Stdout)
	defer writer.Flush()

	var t int
	fmt.Fscan(reader, &t)

	for ; t > 0; t-- {
		var n int
		fmt.Fscan(reader, &n)
		a := make([]int, n)
		for i := 0; i < n; i++ {
			fmt.Fscan(reader, &a[i])
		}

		ops := 0
		for i := 1; i < n-1; i++ {
			if a[i] > a[i-1] && a[i] > a[i+1] {
				ops++
				
				if i+2 < n-1 && a[i+2] > a[i+1] && a[i+2] > a[i+3] {
					
					
					val := a[i]
					if a[i+2] > val {
						val = a[i+2]
					}
					a[i+1] = val
					
					
					
					
				} else {
					
					
					a[i+1] = a[i]
				}
			}
		}

		fmt.Fprintln(writer, ops)
		for i := 0; i < n; i++ {
			if i > 0 {
				fmt.Fprint(writer, " ")
			}
			fmt.Fprint(writer, a[i])
		}
		fmt.Fprintln(writer)
	}
}