For problem statement at 1000-1999/1500-1599/1520-1529/1523/problemC.txt this is a correct solution, but verifier at 1000-1999/1500-1599/1520-1529/1523/verifierC.go ends with candidate runtime error on case 1: exit status 2
input:
1
7
1 1 1 1 1 1 1 can you fix the verifier?  ```go
package main

import (
	"bufio"
	"fmt"
	"os"
	"strconv"
	"strings"
)

func main() {
	scanner := bufio.NewScanner(os.Stdin)
	scanner.Scan()
	t, _ := strconv.Atoi(scanner.Text())

	for tc := 0; tc < t; tc++ {
		scanner.Scan()
		n, _ := strconv.Atoi(scanner.Text())

		cur := make([]int, 0, n)

		for i := 0; i < n; i++ {
			scanner.Scan()
			x, _ := strconv.Atoi(scanner.Text())

			if x == 1 {
				cur = append(cur, 1)
			} else {
				cur = cur[:len(cur)-1]
				cur = append(cur, x)
			}

			parts := make([]string, len(cur))
			for j, v := range cur {
				parts[j] = strconv.Itoa(v)
			}
			fmt.Println(strings.Join(parts, "."))
		}
	}
}
```