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