#include <iostream>
#include <algorithm>
#include <sstream>
#include <vector>

using namespace std;

int main(int argc, char *argv[]) {
	string s;
	getline(cin, s);
	stringstream sa(s);
	int N;
	sa >> N;
	string res[6];
	int score[6] = {}, nd[6] = {};
	for (int i = 0; i < N; ++i) {
		getline(cin, res[i]);
		if (res[i][0] == '-') {
			res[i][0] = 'x';
		}
	}

	score[0] = count_if(res[0].begin(), res[0].end(), [](char c) -> bool { return c == 'o' || c == '-'; });
	for (int i = 1; i < N; ++i) {
		score[i] = count_if(res[i].begin(), res[i].end(), [](char c) -> bool { return c == 'o'; });
		if (score[i] > score[0]) {
			for (int j = 0; j < N; ++j) {
				if (res[i][j] == '-') {
					res[i][j] = 'o';
					res[j][i] = 'x';
				}
			}
		} else if (score[i] == score[0]) {
			for (int j = 0; j < N; ++j) {
				if (res[i][j] == '-') {
					res[i][j] = 'x';
					res[j][i] = 'o';
				}
			}
		} else {
			int m = score[0] - score[i];
			for (int j = 0; m > 0 && j < N; ++j) {
				if (res[i][j] == '-') {
					res[i][j] = 'o';
					res[j][i] = 'x';
				}
			}
		}
	}

	int ans = 1;
	for (int i = 1; i < N; ++i) {
		for (int j = 0; j < N; ++j) {
			if (res[i][j] == '-') {
				res[i][j] = 'o';
				res[j][i] = 'x';
			}
		}
		score[i] = count_if(res[i].begin(), res[i].end(), [](char c) -> bool { return c == 'o'; });
		ans += (score[i] > score[0]);
	}
	cout << ans << endl;
	return 0;
}