对于几个起始位置，您应该计算 Igor 可以看到的最大图片数量。伊戈尔只有在有这张照片的墙附近的牢房里时才能看到这张照片。伊戈尔有很多时间，所以他会检查他能看到的每一张照片。
Igor is in the museum and he wants to see as many pictures as possible.
Museum can be represented as a rectangular field of n×m cells. Each cell is either empty or impassable. Empty cells are marked with '.', impassable cells are marked with '*'. Every two adjacent cells of different types (one empty and one impassable) are divided by a wall containing one picture.
At the beginning Igor is in some empty cell. At every moment he can move to any empty cell that share a side with the current one.
For several starting positions you should calculate the maximum number of pictures that Igor can see. Igor is able to see the picture only if he is in the cell adjacent to the wall with this picture. Igor have a lot of time, so he will examine every picture he can see.
Input
First line of the input contains three integers n, m and k (3≤n,m≤1000,1≤k≤min(n·m,100000))− the museum dimensions and the number of starting positions to process.
Each of the next n lines contains m symbols '.', '*' − the description of the museum. It is guaranteed that all border cells are impassable, so Igor can't go out from the museum.
Each of the last k lines contains two integers x and y (1≤x≤n,1≤y≤m)− the row and the column of one of Igor's starting positions respectively. Rows are numbered from top to bottom, columns − from left to right. It is guaranteed that all starting positions are empty cells.
Output
Print k integers− the maximum number of pictures, that Igor can see if he starts in corresponding position.