Tontti

import java.util.Map;
import java.util.TreeMap;
import java.lang.Math;

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();
    
    TreeMap<Integer, TreeMap<Integer, Boolean>> metsa = new TreeMap<Integer, TreeMap<Integer, Boolean>>();
    
    for(int ni = 1; ni <= n; ni++) {
      String row = io.next();
      TreeMap<Integer, Boolean> metsa_row = new TreeMap<Integer, Boolean>();
      metsa.put(ni, metsa_row);
      for(int mi = 1; mi <= m; mi++) {
        if(row.charAt(mi-1) == '*') {
          metsa_row.put(mi, true);
        }
      }
    }
    
    int sqrt_x = (int) Math.floor(Math.sqrt((double) x));
    
    int options = 0;
    for(int x1 = 1; x1 <= n-sqrt_x; x1++) for(int y1 = 1; y1 <= m-sqrt_x; y1++) {
      int min = Math.min(n-x1, m-y1);
      for(int w = 1; w <= min; w++) if(sqrt_x < w) {
        int val = 0;
        for(int x2 = x1; x2 <= x1+w; x2++) {
          TreeMap<Integer, Boolean> row = metsa.get(x2);
          if(row != null) {
            for(int y2 = y1; y2 <= y1+w; y2++) {
              if(row.get(y2) != null) val++;
            }
          }
        }
        if(val == x) {
          options++;
        } else if(val > x) {
          break;
        }
      }
    }
    
    io.println(options);
    io.close();
  }
}

Test 1

Group: 1

Verdict: WRONG ANSWER

Test 2

Group: 1

Verdict: ACCEPTED

Test 3

Group: 1

Verdict: WRONG ANSWER

Test 4

Group: 1

Verdict: WRONG ANSWER

Test 5

Group: 1

Verdict: WRONG ANSWER

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