結果

問題 No.867 避難経路
ユーザー e869120e869120
提出日時 2019-08-15 12:22:07
言語 C++14
(gcc 13.2.0 + boost 1.83.0)
結果
AC  
実行時間 2,299 ms / 6,000 ms
コード長 3,039 bytes
コンパイル時間 966 ms
コンパイル使用メモリ 87,800 KB
実行使用メモリ 139,348 KB
最終ジャッジ日時 2024-04-08 23:49:15
合計ジャッジ時間 65,796 ms
ジャッジサーバーID
(参考情報)
judge1 / judge5
このコードへのチャレンジ
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テストケース

テストケース表示
入力 結果 実行時間
実行使用メモリ
testcase_00 AC 27 ms
136,824 KB
testcase_01 AC 26 ms
135,036 KB
testcase_02 AC 26 ms
135,032 KB
testcase_03 AC 26 ms
137,056 KB
testcase_04 AC 26 ms
134,904 KB
testcase_05 AC 27 ms
135,032 KB
testcase_06 AC 26 ms
134,904 KB
testcase_07 AC 26 ms
134,904 KB
testcase_08 AC 27 ms
136,956 KB
testcase_09 AC 26 ms
134,908 KB
testcase_10 AC 27 ms
136,800 KB
testcase_11 AC 26 ms
135,028 KB
testcase_12 AC 26 ms
136,956 KB
testcase_13 AC 27 ms
136,932 KB
testcase_14 AC 26 ms
136,800 KB
testcase_15 AC 2,212 ms
139,348 KB
testcase_16 AC 2,132 ms
138,212 KB
testcase_17 AC 2,293 ms
137,576 KB
testcase_18 AC 2,137 ms
138,464 KB
testcase_19 AC 2,143 ms
138,504 KB
testcase_20 AC 2,095 ms
137,568 KB
testcase_21 AC 2,090 ms
138,436 KB
testcase_22 AC 2,151 ms
138,212 KB
testcase_23 AC 2,251 ms
138,624 KB
testcase_24 AC 2,113 ms
138,724 KB
testcase_25 AC 2,130 ms
138,700 KB
testcase_26 AC 2,146 ms
137,576 KB
testcase_27 AC 2,177 ms
138,484 KB
testcase_28 AC 2,162 ms
138,384 KB
testcase_29 AC 2,299 ms
138,840 KB
testcase_30 AC 1,723 ms
138,968 KB
testcase_31 AC 1,792 ms
138,616 KB
testcase_32 AC 1,789 ms
138,388 KB
testcase_33 AC 1,765 ms
138,460 KB
testcase_34 AC 1,788 ms
138,844 KB
testcase_35 AC 1,986 ms
138,540 KB
testcase_36 AC 1,966 ms
138,708 KB
testcase_37 AC 1,805 ms
138,456 KB
testcase_38 AC 1,790 ms
138,324 KB
testcase_39 AC 1,779 ms
138,496 KB
testcase_40 AC 1,773 ms
138,652 KB
testcase_41 AC 25 ms
136,792 KB
testcase_42 AC 26 ms
134,892 KB
testcase_43 AC 26 ms
137,056 KB
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 #

#include <iostream>
#include <queue>
#include <vector>
#include <algorithm>
#include <functional>
using namespace std;
#pragma warning (disable: 4996)

long long H, W, Q, gx, gy, A[259][259];
long long val[259][259][259], dist[259][259], dist2[259][259], P[259][259];
priority_queue<tuple<long long, int, int>, vector<tuple<long long, int, int>>, greater<tuple<long long, int, int>>> Que;

void dijkstra(long long r) {
	for (int i = 1; i <= H; i++) {
		for (int j = 1; j <= W; j++) dist[i][j] = (1LL << 62);
	}
	dist[gx][gy] = 1LL * (r*r + A[gx][gy]);
	Que.push(make_tuple(dist[gx][gy], gx, gy));

	int dx[4] = { 1, 0, -1, 0 }, dy[4] = { 0,1, 0, -1 };

	while (!Que.empty()) {
		tuple<long long, int, int> tup = Que.top(); Que.pop();
		int cx = get<1>(tup), cy = get<2>(tup);
		for (int i = 0; i < 4; i++) {
			int ex = cx + dx[i], ey = cy + dy[i];
			if (ex <= 0 || ey <= 0 || ex > H || ey > W) continue;

			long long cost = r * r + A[ex][ey];
			if (dist[ex][ey] > dist[cx][cy] + 1LL * cost) {
				dist[ex][ey] = dist[cx][cy] + 1LL * cost;
				Que.push(make_tuple(dist[ex][ey], ex, ey));
			}
		}
	}
}

void init_P() {
	for (int i = 0; i <= H + 1; i++) {
		for (int j = 0; j <= W + 1; j++) P[i][j] = (1LL << 62);
	}
	P[gx][gy] = A[gx][gy];
}

void add_P() {
	for (int i = 1; i <= H; i++) {
		for (int j = 1; j <= W; j++) dist2[i][j] = min(dist2[i][j], P[i][j]);
	}
}

void dijkstra2() {
	for (int i = 1; i <= H; i++) {
		for (int j = 1; j <= W; j++) dist2[i][j] = (1LL << 62);
	}

	init_P();
	for (int i = 1; i <= H; i++) {
		for (int j = 1; j <= W; j++) {
			if (i == gx && j == gy) continue;
			P[i][j] = min(P[i][j], P[i - 1][j] + A[i][j]);
			P[i][j] = min(P[i][j], P[i][j - 1] + A[i][j]);
		}
	}
	add_P();

	init_P();
	for (int i = 1; i <= H; i++) {
		for (int j = W; j >= 1; j--) {
			if (i == gx && j == gy) continue;
			P[i][j] = min(P[i][j], P[i - 1][j] + A[i][j]);
			P[i][j] = min(P[i][j], P[i][j + 1] + A[i][j]);
		}
	}
	add_P();

	init_P();
	for (int i = H; i >= 1; i--) {
		for (int j = 1; j <= W;j++) {
			if (i == gx && j == gy) continue;
			P[i][j] = min(P[i][j], P[i + 1][j] + A[i][j]);
			P[i][j] = min(P[i][j], P[i][j - 1] + A[i][j]);
		}
	}
	add_P();

	init_P();
	for (int i = H; i >= 1; i--) {
		for (int j = W; j >= 1; j--) {
			if (i == gx && j == gy) continue;
			P[i][j] = min(P[i][j], P[i + 1][j] + A[i][j]);
			P[i][j] = min(P[i][j], P[i][j + 1] + A[i][j]);
		}
	}
	add_P();
}

int main() {
	scanf("%lld%lld%lld%lld", &H, &W, &gx, &gy);
	for (int i = 1; i <= H; i++) {
		for (int j = 1; j <= W; j++) scanf("%lld", &A[i][j]);
	}
	for (int i = 1; i <= 250; i++) {
		dijkstra(i);
		for (int j = 1; j <= H; j++) {
			for (int k = 1; k <= W; k++) val[i][j][k] = dist[j][k];
		}
	}
	dijkstra2();

	scanf("%lld", &Q);
	for (int i = 1; i <= Q; i++) {
		long long cx, cy, k;
		scanf("%lld%lld%lld", &cx, &cy, &k);
		long long cost = 0;
		if (k >= 250LL) {
			cost = 1LL * (abs(cx - gx) + abs(cy - gy) + 1LL) * k * k + dist2[cx][cy];
		}
		else {
			cost = val[k][cx][cy];
		}
		printf("%lld\n", cost);
	}
	return 0;
}
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