package main

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

func main() {
	in := bufio.NewReaderSize(os.Stdin, 1<<20)
	out := bufio.NewWriterSize(os.Stdout, 1<<20)
	defer out.Flush()

	var n int
	fmt.Fscan(in, &n)
	for i := 0; i < n; i++ {
		var k, x int64
		fmt.Fscan(in, &k, &x)
		fmt.Fprintln(out, x+9*(k-1))
	}
}