For problem statement at 0-999/600-699/630-639/630/problemM.txt this is a correct solution, but verifier at 0-999/600-699/630-639/630/verifierM.go ends with All tests passed can you fix the verifier? package main

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

func dist(a int64) int64 {
	r := a % 360
	if r < 0 {
		r += 360
	}
	if r > 180 {
		return 360 - r
	}
	return r
}

func main() {
	in := bufio.NewReader(os.Stdin)
	var x int64
	fmt.Fscan(in, &x)

	bestK := 0
	bestD := int64(1 << 60)

	for k := 0; k < 4; k++ {
		d := dist(int64(90*k) - x)
		if d < bestD {
			bestD = d
			bestK = k
		}
	}

	fmt.Print(bestK)
}