For problem statement at 0-999/900-999/920-929/925/problemA.txt this is a correct solution, but verifier at 0-999/900-999/920-929/925/verifierA.go ends with All tests passed. can you fix the verifier? package main

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

type FastScanner struct {
	data []byte
	idx  int
	n    int
}

func NewFastScanner() *FastScanner {
	data, _ := io.ReadAll(os.Stdin)
	return &FastScanner{data: data, n: len(data)}
}

func (fs *FastScanner) NextInt() int {
	for fs.idx < fs.n && (fs.data[fs.idx] < '0' || fs.data[fs.idx] > '9') {
		fs.idx++
	}
	val := 0
	for fs.idx < fs.n && fs.data[fs.idx] >= '0' && fs.data[fs.idx] <= '9' {
		val = val*10 + int(fs.data[fs.idx]-'0')
		fs.idx++
	}
	return val
}

func abs(x int) int {
	if x < 0 {
		return -x
	}
	return x
}

const INF = int(1 << 60)

func best(pos []int, y1, y2, vert int) int {
	if len(pos) == 0 {
		return INF
	}
	a, b := y1, y2
	if a > b {
		a, b = b, a
	}
	ans := INF
	i := sort.SearchInts(pos, a)
	if i < len(pos) {
		p := pos[i]
		cost := abs(y1-p) + abs(y2-p) + vert
		if cost < ans {
			ans = cost
		}
	}
	if i > 0 {
		p := pos[i-1]
		cost := abs(y1-p) + abs(y2-p) + vert
		if cost < ans {
			ans = cost
		}
	}
	return ans
}

func main() {
	fs := NewFastScanner()

	_ = fs.NextInt()
	_ = fs.NextInt()
	cl := fs.NextInt()
	ce := fs.NextInt()
	v := fs.NextInt()

	stairs := make([]int, cl)
	for i := 0; i < cl; i++ {
		stairs[i] = fs.NextInt()
	}

	elevators := make([]int, ce)
	for i := 0; i < ce; i++ {
		elevators[i] = fs.NextInt()
	}

	q := fs.NextInt()
	var out bytes.Buffer

	for i := 0; i < q; i++ {
		x1 := fs.NextInt()
		y1 := fs.NextInt()
		x2 := fs.NextInt()
		y2 := fs.NextInt()

		var ans int
		if x1 == x2 {
			ans = abs(y1 - y2)
		} else {
			df := abs(x1 - x2)
			ans = INF

			s := best(stairs, y1, y2, df)
			if s < ans {
				ans = s
			}

			elevTime := (df + v - 1) / v
			e := best(elevators, y1, y2, elevTime)
			if e < ans {
				ans = e
			}
		}

		out.WriteString(strconv.Itoa(ans))
		out.WriteByte('\n')
	}

	os.Stdout.Write(out.Bytes())
}