Tontti

import java.util.ArrayList;


public class Main {

	public static void main(String[] args) {
		IO io = new IO();
		
		int n = io.nextInt();
		int m = io.nextInt();
		int x = io.nextInt();
		
		ArrayList<Integer> puut = new ArrayList<>();
		
		for (int i = 0; i < n; i++) {
			String rivi = io.next();
			for (int j = 0; j < m; j++) {
				int ind = j + i * m;
				if(rivi.charAt(j) == '*') puut.add(ind);
			}
		}
		int l = 0;
		for (int i = 0; i < n; i++) {
			for (int j = 0; j < m; j++) {
				for (int s = 0; s < Math.min(n, m); s++) {
					if(i+s >= n || j+s >= m) break;
					int c = 0;
					for (int p : puut) {
						int py = p/m;
						int px = p%m;
						if(j <= px && px <= j + s) {
							if(i <= py && py <= i + s) {
								c++;
							}
						}
					}
					if(c == x)l++;
				}
			}
		}
		
		io.println(l);

		io.close();
	}

}

Test 1

Group: 1

Verdict: ACCEPTED

Test 2

Group: 1

Verdict: ACCEPTED

Test 3

Group: 1

Verdict: ACCEPTED

Test 4

Group: 1

Verdict: ACCEPTED

Test 5

Group: 1

Verdict: ACCEPTED

Test 6

Group: 2

Verdict: TIME LIMIT EXCEEDED

Test 7

Group: 2

Verdict: TIME LIMIT EXCEEDED

Test 8

Group: 2

Verdict: TIME LIMIT EXCEEDED

Test 9

Group: 2

Verdict: TIME LIMIT EXCEEDED

Test 10

Group: 2

Verdict: TIME LIMIT EXCEEDED

Test 11

Group: 3

Verdict: TIME LIMIT EXCEEDED

Test 12

Group: 3

Verdict: TIME LIMIT EXCEEDED

Test 13

Group: 3

Verdict: TIME LIMIT EXCEEDED

Test 14

Group: 3

Verdict: TIME LIMIT EXCEEDED

Test 15

Group: 3

Verdict: TIME LIMIT EXCEEDED