結果

問題 No.124 門松列(3)
ユーザー 👑 hos.lyric
提出日時 2019-05-29 05:22:59
言語 D
(dmd 2.109.1)
結果
AC  
実行時間 20 ms / 5,000 ms
コード長 2,705 bytes
コンパイル時間 717 ms
コンパイル使用メモリ 119,612 KB
実行使用メモリ 26,640 KB
最終ジャッジ日時 2024-06-22 01:28:07
合計ジャッジ時間 1,835 ms
ジャッジサーバーID
(参考情報)
judge4 / judge2
このコードへのチャレンジ
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ファイルパターン 結果
sample AC * 4
other AC * 26
権限があれば一括ダウンロードができます

ソースコード

diff #
プレゼンテーションモードにする

import std.conv, std.functional, std.range, std.stdio, std.string;
import std.algorithm, std.array, std.bigint, std.complex, std.container, std.math, std.numeric, std.regex, std.typecons;
import core.bitop;
class EOFException : Throwable { this() { super("EOF"); } }
string[] tokens;
string readToken() { for (; tokens.empty; ) { if (stdin.eof) { throw new EOFException; } tokens = readln.split; } auto token = tokens.front; tokens
    .popFront; return token; }
int readInt() { return readToken.to!int; }
long readLong() { return readToken.to!long; }
real readReal() { return readToken.to!real; }
bool chmin(T)(ref T t, in T f) { if (t > f) { t = f; return true; } else { return false; } }
bool chmax(T)(ref T t, in T f) { if (t < f) { t = f; return true; } else { return false; } }
int binarySearch(alias pred, T)(in T[] as) { int lo = -1, hi = cast(int)(as.length); for (; lo + 1 < hi; ) { const mid = (lo + hi) >> 1;
    (unaryFun!pred(as[mid]) ? hi : lo) = mid; } return hi; }
int lowerBound(T)(in T[] as, T val) { return as.binarySearch!(a => (a >= val)); }
int upperBound(T)(in T[] as, T val) { return as.binarySearch!(a => (a > val)); }
enum L = 10;
int H, W;
int[][] M;
void main() {
try {
for (; ; ) {
W = readInt();
H = readInt();
M = new int[][](H, W);
foreach (x; 0 .. H) foreach (y; 0 .. W) {
M[x][y] = readInt();
}
auto q = new int[H * W * L * L * 4];
int qHead, qTail;
auto d = new int[][][][](H, W, L, L);
foreach (x; 0 .. H) foreach (y; 0 .. W) {
foreach (a; 0 .. L) foreach (b; 0 .. L) {
d[x][y][a][b] = -1;
}
}
d[0][0][0][M[0][0]] = 0;
q[qTail++] = 0;
q[qTail++] = 0;
q[qTail++] = 0;
q[qTail++] = M[0][0];
int ans = -1;
for (; qHead != qTail; ) {
const x = q[qHead++];
const y = q[qHead++];
const a = q[qHead++];
const b = q[qHead++];
if (x == H - 1 && y == W - 1) {
ans = d[x][y][a][b];
break;
}
void update(int xx, int yy) {
const c = M[xx][yy];
if (a == 0 || (((a < b && b > c) || (a > b && b < c)) && (a != c))) {
if (d[xx][yy][b][c] == -1 || d[xx][yy][b][c] > d[x][y][a][b] + 1) {
d[xx][yy][b][c] = d[x][y][a][b] + 1;
q[qTail++] = xx;
q[qTail++] = yy;
q[qTail++] = b;
q[qTail++] = c;
}
}
}
if (x + 1 < H) update(x + 1, y);
if (y + 1 < W) update(x, y + 1);
if (x - 1 >= 0) update(x - 1, y);
if (y - 1 >= 0) update(x, y - 1);
}
writeln(ans);
}
} catch (EOFException e) {
}
}
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