#include <cstdio>
#include <cstdlib>
#include <iostream>
#include <cstring>
#include <string>
#include <algorithm>
#include <cmath>
#include <vector>
#include <queue>
#include <stack>
#include <deque>
#include <map>
#include <unordered_map>
#include <set>
#include <unordered_set>
typedef long long int ll;
using namespace std;
#define INF 1234567890
#define LIMIT 1

char mmap[10][10];

int main() {
	ios::sync_with_stdio(false);
	cin.tie(NULL);
	cout.tie(NULL);

	for (int i = 0; i < 64; i++) {
		cin >> mmap[i];
	}
	int ans = 0;
	for (int i = 0; i < 8; i++) {
		for (int j = 0; j < 8; j++) {
			if (!((i + j) % 2) && mmap[i][j] == 'F')
				++ans;
		}
	}
	cout << ans;
	

	return 0;
}