For problem statement at 0-999/0-99/60-69/62/problemB.txt this is a correct solution, but verifier at 0-999/0-99/60-69/62/verifierB.go ends with All tests passed can you fix the verifier? package main

import (
	"io"
	"os"
	"sort"
	"strconv"
)

func main() {
	in := readAll(os.Stdin)
	var pos int

	nextWord := func() string {
		for pos < len(in) && in[pos] <= ' ' {
			pos++
		}
		if pos >= len(in) {
			return ""
		}
		start := pos
		for pos < len(in) && in[pos] > ' ' {
			pos++
		}
		return string(in[start:pos])
	}

	nStr := nextWord()
	if nStr == "" {
		return
	}
	n, _ := strconv.Atoi(nStr)
	nextWord()
	s := nextWord()

	positions := make([][]int, 26)
	for j := 0; j < len(s); j++ {
		ch := s[j] - 'a'
		positions[ch] = append(positions[ch], j+1)
	}

	out := make([]byte, 0, 64*1024)
	for i := 0; i < n; i++ {
		c := nextWord()
		if c == "" {
			break
		}
		var F int64
		length := int64(len(c))
		for j := 0; j < len(c); j++ {
			p := positions[c[j]-'a']
			if len(p) == 0 {
				F += length
			} else {
				target := j + 1
				idx := sort.SearchInts(p, target)
				bestDiff := -1
				if idx < len(p) {
					bestDiff = p[idx] - target
				}
				if idx > 0 {
					diff := target - p[idx-1]
					if bestDiff == -1 || diff < bestDiff {
						bestDiff = diff
					}
				}
				F += int64(bestDiff)
			}
		}
		out = strconv.AppendInt(out, F, 10)
		out = append(out, '\n')
	}
	os.Stdout.Write(out)
}

func readAll(r io.Reader) []byte {
	b, _ := io.ReadAll(r)
	return b
}