JaeHyeonKim19

import java.io.*;
import java.util.*;

public class Main {
	static int [][] blocks;
	static boolean [][] visited;
	static int answer;
	static int count;
	static void rec(int x, int y, boolean isStart) {
		visited[x][y] = true;
		count++;
		if(x - 1 >= 0 && !visited[x - 1][y] && blocks[x][y] == blocks[x - 1][y]) {
			rec(x - 1, y, false);
		}
		if(y - 1 >= 0 && !visited[x][y - 1] && blocks[x][y] == blocks[x][y - 1]) {
			rec(x, y - 1, false);
		}
		if(x + 1 < 7 && !visited[x + 1][y] && blocks[x][y] == blocks[x + 1][y]) {
			rec(x + 1, y, false);
		}
		if(y + 1 < 7 && !visited[x][y + 1] && blocks[x][y] == blocks[x][y + 1]) {
			rec(x, y + 1, false);
		}
		if(isStart) {
			if(count >= 3) answer++;
			count = 0;
		}
	}

	public static void main(String[] args) throws IOException{
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		answer = 0;
		count = 0;
		blocks = new int [7][7];
		visited = new boolean [7][7];
		StringTokenizer st = new StringTokenizer("");
		for(int i = 0; i < 7; i++) {
			st = new StringTokenizer(br.readLine());
			for(int j = 0; j < 7; j++) {
				blocks[i][j] = Integer.parseInt(st.nextToken());
			}
		}
		for(int i = 0; i < 7; i++) {
			for(int j = 0; j < 7; j++) {
				if (!visited[i][j]) rec(i, j, true);
			}
		}
		System.out.print(answer);
	}
}