For problem statement at 0-999/400-499/430-439/430/problemA.txt this is a correct solution, but verifier at 0-999/400-499/430-439/430/verifierA.go ends with All 100 tests passed can you fix the verifier? ```go
package main

import (
	"fmt"
	"sort"
)

func main() {
	var n, m int
	fmt.Scan(&n, &m)

	x := make([]int, n)
	for i := 0; i < n; i++ {
		fmt.Scan(&x[i])
	}

	type segment struct {
		l, r int
	}
	segs := make([]segment, m)
	for i := 0; i < m; i++ {
		fmt.Scan(&segs[i].l, &segs[i].r)
	}

	// Create indices sorted by coordinate
	indices := make([]int, n)
	for i := 0; i < n; i++ {
		indices[i] = i
	}
	sort.Slice(indices, func(a, b int) bool {
		return x[indices[a]] < x[indices[b]]
	})

	// Assign alternating colors in sorted order
	color := make([]int, n)
	for rank, idx := range indices {
		color[idx] = rank % 2
	}

	// Verify all segments
	for i := 0; i < m; i++ {
		red := 0
		blue := 0
		for j := 0; j < n; j++ {
			if x[j] >= segs[i].l && x[j] <= segs[i].r {
				if color[j] == 0 {
					red++
				} else {
					blue++
				}
			}
		}
		if red-blue > 1 || blue-red > 1 {
			fmt.Println(-1)
			return
		}
	}

	for i := 0; i < n; i++ {
		if i > 0 {
			fmt.Print(" ")
		}
		fmt.Print(color[i])
	}
	fmt.Println()
}
```