結果

問題 No.340 雪の足跡
ユーザー 👑 hos.lyric
提出日時 2019-01-30 02:14:01
言語 D
(dmd 2.109.1)
結果
TLE  
(最新)
AC  
(最初)
実行時間 -
コード長 3,227 bytes
コンパイル時間 1,242 ms
コンパイル使用メモリ 121,116 KB
実行使用メモリ 48,540 KB
最終ジャッジ日時 2024-06-13 03:51:31
合計ジャッジ時間 13,892 ms
ジャッジサーバーID
(参考情報)
judge3 / judge4
このコードへのチャレンジ
(要ログイン)
ファイルパターン 結果
sample AC * 5
other AC * 31 TLE * 1
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.stdio, std.string;
import std.algorithm, std.array, std.bigint, std.container, std.math, std.numeric, std.range, 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)); }
int H, W, N;
int[] M;
int[][] B;
void main() {
try {
for (; ; ) {
W = readInt();
H = readInt();
N = readInt();
M = new int[N];
B = new int[][N];
foreach (i; 0 .. N) {
M[i] = readInt();
B[i] = new int[M[i] + 1];
foreach (j; 0 .. M[i] + 1) {
B[i][j] = readInt();
}
}
auto road = new int[][](H * 2, W * 2);
foreach (i; 0 .. N) {
foreach (j; 0 .. M[i]) {
int xa = B[i][j] / W;
int ya = B[i][j] % W;
int xb = B[i][j + 1] / W;
int yb = B[i][j + 1] % W;
if (xa > xb) {
swap(xa, xb);
}
if (ya > yb) {
swap(ya, yb);
}
++road[xa * 2][ya * 2];
--road[xa * 2][yb * 2 + 1];
--road[xb * 2 + 1][ya * 2];
++road[xb * 2 + 1][yb * 2 + 1];
}
}
foreach (x; 1 .. H * 2) foreach (y; 0 .. W * 2) {
road[x][y] += road[x - 1][y];
}
foreach (x; 0 .. H * 2) foreach (y; 1 .. W * 2) {
road[x][y] += road[x][y - 1];
}
debug {
foreach_reverse (x; 0 .. H * 2) {
writeln(road[x]);
}
}
int[] q;
auto dist = new int[][](H, W);
foreach (x; 0 .. H) foreach (y; 0 .. W) {
dist[x][y] = -1;
}
dist[0][0] = 0;
q ~= 0;
q ~= 0;
for (; !q.empty; ) {
const x = q.front; q.popFront;
const y = q.front; q.popFront;
foreach (dir; 0 .. 4) {
const xx = x + [+1, 0, -1, 0][dir];
const yy = y + [0, +1, 0, -1][dir];
if (0 <= xx && xx < H && 0 <= yy && yy < W) {
if (road[x + xx][y + yy] > 0) {
if (dist[xx][yy] == -1) {
dist[xx][yy] = dist[x][y] + 1;
q ~= xx;
q ~= yy;
}
}
}
}
}
if (dist[H - 1][W - 1] == -1) {
writeln("Odekakedekinai..");
} else {
writeln(dist[H - 1][W - 1]);
}
}
} catch (EOFException e) {
}
}
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