Why my solution no work?
package main
import "fmt"
func main() {
// your code goes here
var n, m, q int
fmt.Scanf("%d %d %d", &n, &m, &q)
a := make([]int, n)
b := make([]int, m)
for i := range n {
fmt.Scan(&a[i])
}
for i := range m {
fmt.Scan(&b[i])
}
for ; q > 0; q-- {
solve(&a, &b)
}
}
func solve(a, b *[]int) {
var l1, r1, l2, r2 int
fmt.Scanf("%d %d %d %d", &l1, &r1, &l2, &r2)
countMapA := make(map[int]int)
countMapB := make(map[int]int)
for i := l1; i <= r1; i++ {
countMapA[(*a)[i-1]]++
}
for i := l2; i <= r2; i++ {
countMapB[(*b)[i-1]]++
}
countMap := make(map[int]int)
for key, value := range countMapA {
if value%2 != 0 {
countMap[key] += value
}
}
for key, value := range countMapB {
if value%2 != 0 {
countMap[key] += value
}
}
count := 0
for _, value := range countMap {
if value%2 != 0 {
count++
}
}
fmt.Println(count)
}