P3654 First Step (遍历枚举)

import java.util.Scanner;

public class P3654 {
	static int R,C,K,count=0;
	static char[][] grid = new char[100][100];
 	
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		R = sc.nextInt();
		C = sc.nextInt();
		K = sc.nextInt();
		for(int i=0;i<R;i++) {
			grid[i] = sc.next().toCharArray();
		}
		get();
		System.out.println(count);
	}
 	
	private static void get() {
		
		boolean flag ;
		for(int i=0;i<R;i++) {
			for(int j=0;j<C;j++) {
				
				flag = true;
				for(int s=0;s<K;s++) {
					if((i+s)>=R||grid[i+s][j] != '.') {
						flag = false;
						break;
					}
				}
				if(flag==true) {
					count++;
				}
				
				flag = true;
				for(int s=0;s<K;s++) {
					if((j+s)>=C||grid[i][j+s] != '.') {
						flag = false;
						break;
					}
				}
				if(flag==true) {
					count++;
				}
				
			}
		}
		if(K==1) {
			count /= 2;
		}
	}
}