55 lines
944 B
Go
55 lines
944 B
Go
package main
|
|
|
|
import (
|
|
"bufio"
|
|
"fmt"
|
|
"os"
|
|
"slices"
|
|
"strconv"
|
|
"strings"
|
|
)
|
|
|
|
func main() {
|
|
left := []int64{};
|
|
right := []int64{};
|
|
reader := bufio.NewReader(os.Stdin)
|
|
|
|
for {
|
|
raw, _, _ := reader.ReadLine()
|
|
line := string(raw)
|
|
if strings.Trim(line, " ") == "" {
|
|
break
|
|
}
|
|
|
|
values := strings.Split(line, " ")
|
|
|
|
l, _ := strconv.ParseInt(values[0], 10, 64)
|
|
r, _ := strconv.ParseInt(values[1], 10, 64)
|
|
|
|
left = append(left, l)
|
|
right = append(right, r)
|
|
}
|
|
|
|
ans := part1(&left, &right)
|
|
|
|
fmt.Println("", ans)
|
|
}
|
|
|
|
func part1(left *[]int64, right *[]int64) int64 {
|
|
slices.SortFunc(*left, func (a, b int64) int { return int(a - b); });
|
|
slices.SortFunc(*right, func (a, b int64) int { return int(a - b); });
|
|
|
|
var sum int64 = 0
|
|
|
|
sz := len(*left)
|
|
|
|
for i := 0; i < sz; i++ {
|
|
diff := (*left)[i] - (*right)[i]
|
|
if diff < 0 {
|
|
diff = diff * -1
|
|
}
|
|
sum += diff
|
|
}
|
|
|
|
return sum;
|
|
}
|