結果
問題 | No.424 立体迷路 |
ユーザー |
![]() |
提出日時 | 2020-10-16 17:10:58 |
言語 | Go (1.23.4) |
結果 |
AC
|
実行時間 | 2 ms / 2,000 ms |
コード長 | 2,688 bytes |
コンパイル時間 | 12,982 ms |
コンパイル使用メモリ | 226,116 KB |
実行使用メモリ | 5,376 KB |
最終ジャッジ日時 | 2024-07-20 20:57:53 |
合計ジャッジ時間 | 11,083 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge3 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 5 |
other | AC * 21 |
ソースコード
package mainimport ("bufio""fmt""os""sort""strconv")var sc = bufio.NewScanner(os.Stdin)var wr = bufio.NewWriter(os.Stdout)func out(x ...interface{}) {fmt.Fprintln(wr, x...)}func getI() int {sc.Scan()i, e := strconv.Atoi(sc.Text())if e != nil {panic(e)}return i}func getF() float64 {sc.Scan()i, e := strconv.ParseFloat(sc.Text(), 64)if e != nil {panic(e)}return i}func getInts(N int) []int {ret := make([]int, N)for i := 0; i < N; i++ {ret[i] = getI()}return ret}func getS() string {sc.Scan()return sc.Text()}// min, max, asub, absなど基本関数func max(a, b int) int {if a > b {return a}return b}func min(a, b int) int {if a < b {return a}return b}func asub(a, b int) int {if a > b {return a - b}return b - a}func abs(a int) int {if a >= 0 {return a}return -a}func lowerBound(a []int, x int) int {idx := sort.Search(len(a), func(i int) bool {return a[i] >= x})return idx}func upperBound(a []int, x int) int {idx := sort.Search(len(a), func(i int) bool {return a[i] > x})return idx}var h, w, sx, sy, gx, gy intvar b [][]intvar d [][]inttype pos struct {x, y int}var dx = []int{1, -1, 0, 0}var dy = []int{0, 0, -1, 1}func bfs(sx, sy int) {d[sy][sx] = 0q := make([]pos, 0)q = append(q, pos{sx, sy})for len(q) != 0 {cx := q[0].xcy := q[0].yq = q[1:]for i := 0; i < 4; i++ {px := cx + dx[i]py := cy + dy[i]if px < 0 || py < 0 || px >= w || py >= h {continue}if abs(b[py][px]-b[cy][cx]) <= 1 {if d[py][px] == inf {d[py][px] = d[cy][cx] + 1q = append(q, pos{px, py})}}}for i := 0; i < 4; i++ {px := cx + dx[i]*2py := cy + dy[i]*2if px < 0 || py < 0 || px >= w || py >= h {continue}if b[py][px] == b[cy][cx] && b[(cy+py)/2][(cx+px)/2] < b[py][px] {if d[py][px] == inf {d[py][px] = d[cy][cx] + 1q = append(q, pos{px, py})}}}}}const inf = int(100)func main() {defer wr.Flush()sc.Split(bufio.ScanWords)sc.Buffer([]byte{}, 1000000)// this template is new version.// use getI(), getS(), getInts(), getF()h, w = getI(), getI()sy, sx, gy, gx = getI()-1, getI()-1, getI()-1, getI()-1b = make([][]int, h)d = make([][]int, h)for i := 0; i < h; i++ {b[i] = make([]int, w)d[i] = make([]int, w)s := getS()for j := 0; j < w; j++ {b[i][j] = int(s[j] - '0')d[i][j] = inf}}bfs(sx, sy)// for i := 0; i < h; i++ {// out(b[i])// }// out("----")// for i := 0; i < h; i++ {// out(d[i])// }if d[gy][gx] != inf {out("YES")return}out("NO")}