For problem statement at 2000-2999/2100-2199/2150-2159/2150/problemE1.txt this is a correct solution, but verifier at 2000-2999/2100-2199/2150-2159/2150/verifierE1.go ends with failed to read t: EOF
exit status 1 can you fix the verifier? package main

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

func main() {
	in := bufio.NewReader(os.Stdin)
	out := bufio.NewWriter(os.Stdout)
	defer out.Flush()

	var t int
	if _, err := fmt.Fscan(in, &t); err != nil {
		return
	}
	for ; t > 0; t-- {
		var n int
		if _, err := fmt.Fscan(in, &n); err != nil {
			return
		}
		if n == -1 {
			return
		}
		fmt.Fprintln(out, "! 1")
		out.Flush()
	}
}