package main

import (
	"fmt"
	"log"
)

func checkGuess(guess [4]int, ans [4]int) (int, int) {
	cntX, xntY := 0, 0
	for i := 0; i < 4; i++ {
		if guess[i] == ans[i] {
			cntX++
		}
		for j := 0; j < 4; j++ {
			if i != j && guess[i] == ans[j] {
				xntY++
			}
		}
	}
	return cntX, xntY
}

func main() {
	answers := [][4]int{}
	for a := 0; a < 10; a++ {
		for b := 0; b < 10; b++ {
			for c := 0; c < 10; c++ {
				for d := 0; d < 10; d++ {
					if a != b && a != c && a != d && b != c && b != d && c != d {
						answers = append(answers, [4]int{a, b, c, d})
					}
				}
			}
		}
	}
	check := make([]bool, len(answers))
	var x, y int
	for i := 0; i < len(answers); i++ {
		if check[i] {
			continue
		}
		// Guess
		fmt.Printf("%d %d %d %d\n", answers[i][0], answers[i][1], answers[i][2], answers[i][3])
		fmt.Scan(&x, &y)
		if x == 4 {
			log.Println("Correct guess!")
			break
		}
		for j := 0; j < len(answers); j++ {
			if check[j] {
				continue
			}
			cntX, cntY := checkGuess(answers[i], answers[j])
			if cntX != x || cntY != y {
				check[j] = true
			}
		}
	}
}