#172796 (C++14) No.20 砂漠のオアシス

• 問題: No.20 砂漠のオアシス
• ユーザー: mban
• 提出日時: 2017-05-08 23:59:32
• 言語: C++14 (gcc 12.3.0 + boost 1.83.0)
• 結果: WA
• 実行時間: -
• コード長: 1,992 bytes
• コンパイル時間: 742 ms
• コンパイル使用メモリ: 80,276 KB
• 実行使用メモリ: 16,248 KB
• 最終ジャッジ日時: 2024-10-13 05:51:04
• 合計ジャッジ時間: 3,451 ms
• ジャッジサーバーID （参考情報）: judge5 / judge3

入力	結果	実行時間; 実行使用メモリ
testcase_00	AC	2 ms; 5,248 KB
testcase_01	AC	2 ms; 5,248 KB
testcase_02	AC	2 ms; 5,248 KB
testcase_03	AC	3 ms; 5,248 KB
testcase_04	AC	3 ms; 5,248 KB
testcase_05	WA	-
testcase_06	AC	10 ms; 5,248 KB
testcase_07	AC	38 ms; 5,248 KB
testcase_08	AC	16 ms; 5,248 KB
testcase_09	AC	33 ms; 5,248 KB
testcase_10	AC	2 ms; 5,248 KB
testcase_11	AC	2 ms; 5,248 KB
testcase_12	AC	5 ms; 5,248 KB
testcase_13	AC	6 ms; 5,248 KB
testcase_14	AC	112 ms; 5,248 KB
testcase_15	AC	63 ms; 5,248 KB
testcase_16	WA	-
testcase_17	AC	54 ms; 5,248 KB
testcase_18	AC	229 ms; 5,248 KB
testcase_19	AC	78 ms; 5,248 KB
testcase_20	WA	-

ソースコード

#include<iostream>
#include<vector>
#include<algorithm>
#include<queue>

using namespace std;
struct  Cell
{
	int X, Y, Life;
	Cell(int x, int y, int life) {
		X = x;
		Y = y;
		Life = life;
	}
};

struct gret
{
	bool operator ()(const Cell &left, const Cell &right) {
		return left.Life < right.Life;
	}
};

int N, V, Ox, Oy;
int L[250][250];
int Next[4] = { 1,0,-1,0 };

int main() {
	cin >> N >> V >> Ox >> Oy;
	for (int i = 0; i < N; i++) {
		for (int j = 0; j < N; j++) {
			cin >> L[i][j];
		}
	}

	priority_queue<Cell,vector<Cell>,gret>pq;

	pq.push(Cell(1, 1, V));
	bool B[250][250];
	int oLife = -1;
	while (pq.size() > 0)
	{
		Cell c = pq.top();
		pq.pop();
		B[c.Y - 1][c.X - 1] = true;
		if (c.Y == N&&c.X == N) {
			cout << "YES" << endl;
			return 0;
		}

		if (c.Y == Oy&&c.X == Ox) {
			oLife = c.Life;
		}

		for (int i = 0; i < 4; i++) {
			int nextY = c.Y + Next[i];
			int nextX = c.X + Next[(i + 1) % 4];
			if (nextX < 1 || nextY < 1) continue;
			if (nextX > N || nextY > N) continue;
			if (B[nextY - 1][nextX - 1]) continue;
			int nextLife = c.Life - L[nextY - 1][nextX - 1];
			if (nextLife <= 0) continue;
			pq.push(Cell(nextX, nextY, nextLife));
		}
	}

	if (Ox == 0 && Oy == 0)
	{
		cout << "NO" << endl;
		return 0;
	}

	pq = priority_queue<Cell,vector<Cell>,gret>();

	pq.push(Cell(Ox, Oy, oLife * 2));
	for (int i = 0; i < 250; i++) {
		for (int j = 0; j < 250; j++) {
			B[i][j] = false;
		}
	}

	while (pq.size() > 0)
	{
		Cell c = pq.top();
		pq.pop();
		B[c.Y - 1][c.X - 1] = true;
		if (c.Y == N&&c.X == N) {
			cout << "YES" << endl;
			return 0;
		}

		for (int i = 0; i < 4; i++) {
			int nextY = c.Y + Next[i];
			int nextX = c.X + Next[(i + 1) % 4];
			if (nextX < 1 || nextY < 1) continue;
			if (nextX > N || nextY > N) continue;
			if (B[nextY - 1][nextX - 1]) continue;
			int nextLife = c.Life - L[nextY - 1][nextX - 1];
			if (nextLife <= 0) continue;
			pq.push(Cell(nextX, nextY, nextLife));
		}
	}

	cout << "NO" << endl;
	return 0;

}