main.go

package main

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

// https://space.bilibili.com/206214
type interaction interface {
	readInitData() initData
	query(request) response
	printAnswer(answer)
}

type stdIO struct {
	in  *bufio.Reader
	out *bufio.Writer
}

type (
	initData struct{ n int }
	request  struct{ q int }
	response struct{ v int } // 如果有多种不同类型的返回值，改成 string 或者 []any
	answer   struct{ ans int }
)

func (io stdIO) readInitData() initData {
	in := io.in

	var n int
	Fscan(in, &n)
	// TODO 初始输入格式？

	return initData{n}
}

func (io stdIO) query(q request) (resp response) {
	in, out := io.in, io.out

	Fprintln(out, "?", q.q)
	//Fprint(out, "?")
	//Fprint(out, " ", len(q.q)) // TODO 输出 query 长度？
	//for _, v := range q.q { Fprint(out, " ", v) }
	//Fprintln(out)

	out.Flush()
	Fscan(in, &resp.v)
	//if resp.v < 0 { panic(-1) }
	return
}

func (io stdIO) printAnswer(a answer) {
	out := io.out

	Fprintln(out, "!", a.ans)
	//Fprint(out, "!")
	//Fprint(out, " ", len(a.ans)) // TODO 输出答案长度？
	//for _, v := range a.ans { Fprint(out, " ", v) }
	//Fprintln(out)

	out.Flush()

	// TODO judge 是否返回答案非法？（通常是 move on to the next test case）
	//var state int
	//Fscan(io.in, &state)
	//if state < 0 { panic(state) }
}

func doInteraction(it interaction) {
	// TODO 初始输入格式？
	dt := it.readInitData()
	n := dt.n
	_ = n

	// TODO query 格式？
	get := func(q int) int {
		//for i := range q { q[i]++ }
		return it.query(request{q}).v
	}
	_ = get

	// TODO 答案类型？
	var ans int
	//ans := make([]int, n)
	defer func() { it.printAnswer(answer{ans}) }()

	// TODO: 在这里实现

}

// TODO: 运行 & 测试！检查格式是否正确
func main() { run() }

func run() {
	in := bufio.NewReader(os.Stdin)
	out := bufio.NewWriter(os.Stdout)

	T := 1
	// TODO：多测？
	Fscan(in, &T)
	for ; T > 0; T-- {
		doInteraction(stdIO{in, out})
	}
}