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  1. /* paiza POH! vol.2
  2.  * result:
  3.  * http://p...content-available-to-author-only...a.jp/poh/paizen/result/a34a075d70f7f8f450de3a0252049f32
  4.  * author: Leonardone @ NEETSDKASU
  5.  */
  6. import java.util.*;
  7. import java.lang.*;
  8. import java.io.*;
  9.  
  10. class Main
  11. {
  12. 	public static void main (String[] args) throws java.lang.Exception
  13. 	{
  14. 		BufferedReader in = new BufferedReader(
  15. 			new InputStreamReader(System.in));
  16.  
  17. 		String[] hw = in.readLine().split(" ");
  18. 		final int H = Integer.parseInt(hw[0]); // ホーム画面縦の区画数
  19. 		final int W = Integer.parseInt(hw[1]); // ホーム画面横の区画数
  20.  
  21. 		int[][] space2left = new int[H][W];
  22. 		int[][] space2top = new int[H][W];
  23. 		int spacecount = 0;
  24.  
  25. 		List<Position> startposition2left = new ArrayList<Position>(H * W);
  26. 		List<Position> startposition2top = new ArrayList<Position>(H * W);
  27.  
  28. 		for (int y = 0; y < H; y++)
  29. 		{
  30. 			String line = in.readLine();
  31. 			int space2leftSize = 0;
  32. 			for (int x = 0; x < W; x++)
  33. 			{
  34. 				char ch = line.charAt(x);
  35. 				if (ch == '1')
  36. 				{
  37. 					space2leftSize = 0;
  38. 					space2top[y][x] = 0;
  39. 					if (x > 0 && space2left[y][x - 1] > 0)
  40. 					{
  41. 						startposition2left.add(
  42. 							Position.getPosition(y, x - 1));
  43. 					}
  44. 					if (y > 0 && space2top[y - 1][x] > 0)
  45. 					{
  46. 						startposition2top.add(
  47. 							Position.getPosition(y - 1, x));
  48. 					}
  49. 				}
  50. 				else // if (ch == '0')
  51. 				{
  52. 					spacecount++;
  53. 					space2leftSize++;
  54. 					if (y > 0)
  55. 					{
  56. 						space2top[y][x] = space2top[y - 1][x] + 1;
  57. 						if (y == H - 1)
  58. 						{
  59. 							startposition2top.add(
  60. 								Position.getPosition(y, x));
  61. 						}
  62. 					}
  63. 					else // if (y == 0)
  64. 					{
  65. 						space2top[y][x] = 1;
  66. 					}
  67. 					if (x == W - 1)
  68. 					{
  69. 						startposition2left.add(
  70. 							Position.getPosition(y, x));
  71. 					}
  72. 				}
  73. 				space2left[y][x] = space2leftSize;
  74. 			}
  75. 		}
  76. 		// print2dArray(space2left);
  77. 		// print2dArray(space2top);
  78. 		// System.out.println(startposition2left);
  79. 		// System.out.println(startposition2top);
  80.  
  81. 		final int N = Integer.valueOf(in.readLine()); // ウィジェット数
  82. 		HashSet<Position> placeablePosition = new HashSet<Position>(H * W);
  83. 		Map<Position, Integer> result = new HashMap<Position, Integer>(N);
  84.  
  85. 		for (int i = 0; i < N; i++)
  86. 		{
  87. 			String[] st = in.readLine().split(" ");
  88. 			int s = Integer.parseInt(st[0]); // ウィジェットの縦サイズ
  89. 			int t = Integer.parseInt(st[1]); // ウィジェットの横サイズ
  90. 			Position key = Position.getPosition(s, t);
  91. 			Integer value;
  92. 			if ((value = result.get(key)) != null)
  93. 			{
  94. 				System.out.println(value.intValue());
  95. 				continue;
  96. 			}
  97. 			int placeableCount = 0;
  98.  
  99. 			if (s == 1) // 横長のウィジェット
  100. 			{
  101. 				if (t == 1) // 1x1のウィジェット
  102. 				{
  103. 					placeableCount = spacecount;
  104. 				}
  105. 				else // if (t != 1) // 横長のウィジェット
  106. 				{
  107. 					for (Position position : startposition2left)
  108. 					{
  109. 						int spaceWSize = space2left[position.y][position.x];
  110. 						if (spaceWSize >= t)
  111. 						{
  112. 							placeableCount += spaceWSize - t + 1;
  113. 						}
  114. 					}
  115. 				}
  116. 			}
  117. 			else if (t == 1) // 縦長のウィジェット
  118. 			{
  119. 				for (Position position : startposition2top)
  120. 				{
  121. 					int spaceHSize = space2top[position.y][position.x];
  122. 					if (spaceHSize >= s)
  123. 					{
  124. 						placeableCount += spaceHSize - s + 1;
  125. 					}
  126. 				}
  127. 			}
  128. 			else // if (s != 1 && t != 1)
  129. 			{
  130. 				placeablePosition.clear();
  131. 				// 横に走査していく
  132. 				for (Position position : startposition2left)
  133. 				{
  134. 					int spaceWSize = space2left[position.y][position.x];
  135. 					for (int dx = 0; dx < spaceWSize; ++dx)
  136. 					{
  137. 						int x = position.x - dx;
  138. 						int spaceHSize = space2top[position.y][x];
  139. 						if (spaceHSize < s)
  140. 						{
  141. 							continue; // 縦サイズが足りない
  142. 						}
  143. 						// 縦に走査して横サイズ以上の連続する空所を数える
  144. 						int count = 0;
  145. 						for (int dy = 0; dy < spaceHSize; ++dy)
  146. 						{
  147. 							int y = position.y - dy;
  148. 							if (space2left[y][x] >= t) 
  149. 							{
  150. 								count++;
  151. 								if (count >= s) // ウィジェットが確保できる
  152. 								{
  153. 									boolean placed = placeablePosition.add(
  154. 														Position.getPosition(y, x));
  155. 									if (placed == false)
  156. 									{
  157. 										break; // これ以上の縦の走査は走査済み
  158. 									}
  159. 								}
  160. 							}
  161. 							else
  162. 							{
  163. 								count = 0; // 連続の途切れ
  164. 							}
  165. 						}
  166. 					}
  167. 				}
  168. 				placeableCount = placeablePosition.size();
  169. 			}
  170. 			System.out.println(placeableCount);
  171. 			result.put(key, Integer.valueOf(placeableCount));
  172. 		}
  173.  
  174. 	} // end of main(String[])
  175.  
  176. 	static void print2dArray(int[][] array)
  177. 	{
  178. 		for (int i = 0; i < array.length; i++)
  179. 		{
  180. 			for (int j = 0; j < array[i].length; j++)
  181. 			{
  182. 				System.out.print(array[i][j] + " ");
  183. 			}
  184. 			System.out.println();
  185. 		}
  186. 		System.out.println();
  187. 	}
  188.  
  189. 	static class Position
  190. 	{
  191. 		static Position[] pool = new Position[90000];
  192. 		static Position getPosition(int y, int x)
  193. 		{
  194. 			int index = y * 300 + x;
  195. 			if (pool[index] == null)
  196. 			{
  197. 				pool[index] = new Position(y, x);
  198. 			}
  199. 			return pool[index];
  200. 		}		
  201.  
  202. 		final int y;
  203. 		final int x;
  204. 		private Position(int y, int x)
  205. 		{
  206. 			this.y = y;
  207. 			this.x = x;
  208. 		}
  209.  
  210. 		@Override public String toString()
  211. 		{
  212. 			return "(" + x + ", " + y + ")";
  213. 		}
  214.  
  215. 		@Override public int hashCode()
  216. 		{
  217. 			return y ^ x;
  218. 		}
  219.  
  220. 		@Override public boolean equals(Object obj)
  221. 		{
  222. 			Position pos = (Position)obj;
  223. 			return y == pos.y && x == pos.x;
  224. 		}
  225. 	} // end of class Position
  226. }
  227.  
Success #stdin #stdout 0.07s 380224KB
comments (?)
stdin 
5 5
00000
00100
00010
10001
10000
3
2 2
1 1
3 2
stdout 
6
20
2
https://ideone.com/JlJdpK
language:
Java (HotSpot 12)
created:
10 years ago
visibility:
secret

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