#include <algorithm>
#include <cassert>
#include <cmath>
#include <cstdio>
#include <cstring>
#include <iomanip>
#include <iostream>
#include <map>
#include <memory>
#include <numeric>
#include <set>
#include <stack>
#include <string>
#include <vector>

#define rep(i, a, b) for (int i = (a); i < (b); ++i)
#define MOD 1000000007
#define int long long
using ll = long long;
using namespace std;
const int INF = 1LL << 50;
using P       = pair<int, int>;

template <class T>
bool chmin(T &a, T b) {
    if (a > b) {
        a = b;
        return true;
    } else {
        return false;
    }
}
template <class T>
bool chmax(T &a, T b) {
    if (a < b) {
        a = b;
        return true;
    } else {
        return false;
    }
}

struct Setup {
    Setup() {
        cin.tie(0);
        ios::sync_with_stdio(false);
        cout << fixed << setprecision(20);
    }
} SETUP;

bool is_kado(int a, int b, int c) {
    if (a != c && b > a && b > c) {
        return true;
    }
    if (a != c && b < a && b < c) {
        return true;
    }
    return false;
}

signed main() {
    int n;
    cin >> n;
    map<int, int> mp;
    rep(i, 0, n) {
        string s;
        cin >> s;
        int eye = 0;
        rep(j, 1, (int)s.size() - 1) {
            if (s[j] == '^') {
                eye++;
            }
        }
        mp[eye]++;
    }
    auto ap(P(0, 0));
    for (auto p : mp) {
        if (ap.first <= p.first && ap.second <= p.second) {
            ap = p;
        }
    }
    cout << ap.first << endl;
}