For problem statement at 2000-2999/2100-2199/2140-2149/2149/problemC.txt this is a correct solution, but verifier at 2000-2999/2100-2199/2140-2149/2149/verifierC.go ends with invalid input: failed to read t: EOF
exit status 1 can you fix the verifier? package main

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

type FastScanner struct {
	r *bufio.Reader
}

func NewFastScanner() *FastScanner {
	return &FastScanner{r: bufio.NewReaderSize(os.Stdin, 1<<20)}
}

func (fs *FastScanner) NextInt() int {
	sign, val := 1, 0
	c, err := fs.r.ReadByte()
	for (c < '0' || c > '9') && c != '-' {
		c, err = fs.r.ReadByte()
		if err != nil {
			return 0
		}
	}
	if c == '-' {
		sign = -1
		c, _ = fs.r.ReadByte()
	}
	for c >= '0' && c <= '9' {
		val = val*10 + int(c-'0')
		c, err = fs.r.ReadByte()
		if err != nil {
			break
		}
	}
	if err == nil {
		_ = fs.r.UnreadByte()
	}
	return sign * val
}

func main() {
	fs := NewFastScanner()
	t := fs.NextInt()
	var out bytes.Buffer

	for ; t > 0; t-- {
		n := fs.NextInt()
		k := fs.NextInt()
		freq := make([]int, n+1)
		for i := 0; i < n; i++ {
			x := fs.NextInt()
			freq[x]++
		}

		missing := 0
		for i := 0; i < k; i++ {
			if freq[i] == 0 {
				missing++
			}
		}

		ans := missing
		if freq[k] > ans {
			ans = freq[k]
		}
		fmt.Fprintln(&out, ans)
	}

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