48 lines
739 B
Go
48 lines
739 B
Go
package main
|
|
|
|
import (
|
|
"bufio"
|
|
"fmt"
|
|
"os"
|
|
|
|
"git.adyxax.org/aoc/2021/05/line"
|
|
)
|
|
|
|
func main() {
|
|
matrix := make([][]int, 1000)
|
|
for i := 0; i < 1000; i++ {
|
|
matrix[i] = make([]int, 1000)
|
|
}
|
|
|
|
parser := line.NewParser(bufio.NewReader(os.Stdin))
|
|
for {
|
|
l, err := parser.Parse()
|
|
if err != nil {
|
|
break
|
|
}
|
|
if l.X1 == l.X2 {
|
|
if l.Y1 > l.Y2 {
|
|
l.Y1, l.Y2 = l.Y2, l.Y1
|
|
}
|
|
for i := l.Y1; i <= l.Y2; i++ {
|
|
matrix[l.X1][i]++
|
|
}
|
|
} else if l.Y1 == l.Y2 {
|
|
if l.X1 > l.X2 {
|
|
l.X1, l.X2 = l.X2, l.X1
|
|
}
|
|
for i := l.X1; i <= l.X2; i++ {
|
|
matrix[i][l.Y1]++
|
|
}
|
|
}
|
|
}
|
|
score := 0
|
|
for i := 0; i < 1000; i++ {
|
|
for j := 0; j < 1000; j++ {
|
|
if matrix[i][j] >= 2 {
|
|
score++
|
|
}
|
|
}
|
|
}
|
|
fmt.Println(score)
|
|
}
|