#include <bits/stdc++.h>
using namespace std;

int main()
{
	int N;
	cin >> N;
	vector<string> S( N );
	for( int i = 0; i < N; i++ ) {
		cin >> S[i];
	}

	map<int, int> mp;
	for( int i = 0; i < N; i++ ) {
		int n = 0;
		for( int j = 0; j < S[i].size(); j++ ) {
			if( S[i][j] != '^' ) continue;
			n++;
		}
		mp[n]++;
	}
	int ans = 0;
	int ma = 0;
	for( auto it = mp.begin(); it != mp.end(); it++ ) {
		if( it->second > ma ) {
			ma = it->second;
			ans = it->first;
		}
		else if( it->second == ma ) {
			ans = max( ans, it->first );
		}
	}

	cout << ans << endl;
}