For problem statement at 1000-1999/1300-1399/1370-1379/1370/problemD.txt this is a correct solution, but verifier at 1000-1999/1300-1399/1370-1379/1370/verifierD.go ends with All tests passed can you fix the verifier? package main

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

func main() {
	data, _ := io.ReadAll(os.Stdin)
	idx := 0
	nextInt := func() int {
		for idx < len(data) && (data[idx] < '0' || data[idx] > '9') {
			idx++
		}
		val := 0
		for idx < len(data) && data[idx] >= '0' && data[idx] <= '9' {
			val = val*10 + int(data[idx]-'0')
			idx++
		}
		return val
	}

	n := nextInt()
	k := nextInt()
	a := make([]int, n)
	mx := 0
	for i := 0; i < n; i++ {
		a[i] = nextInt()
		if a[i] > mx {
			mx = a[i]
		}
	}

	possible := func(x int) bool {
		cnt := 0
		for _, v := range a {
			if cnt%2 == 0 {
				if v <= x {
					cnt++
				}
			} else {
				cnt++
			}
			if cnt >= k {
				return true
			}
		}

		cnt = 0
		for _, v := range a {
			if cnt%2 == 0 {
				cnt++
			} else {
				if v <= x {
					cnt++
				}
			}
			if cnt >= k {
				return true
			}
		}

		return false
	}

	l, r := 1, mx
	for l < r {
		m := l + (r-l)/2
		if possible(m) {
			r = m
		} else {
			l = m + 1
		}
	}

	out := bufio.NewWriter(os.Stdout)
	fmt.Fprint(out, l)
	out.Flush()
}