For problem statement at 1000-1999/1300-1399/1310-1319/1311/problemA.txt this is a correct solution, but verifier at 1000-1999/1300-1399/1310-1319/1311/verifierA.go ends with All 100 tests passed 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 i := 0; i < t; i++ {
		var a, b int64
		fmt.Fscan(in, &a, &b)
		d := b - a
		var ans int
		if d == 0 {
			ans = 0
		} else if d%2 != 0 {
			if d > 0 {
				ans = 1
			} else {
				ans = 2
			}
		} else {
			if d < 0 {
				ans = 1
			} else {
				ans = 2
			}
		}
		fmt.Fprintln(out, ans)
	}
}