#include<bits/stdc++.h>
#define all(v) v.begin(),v.end()
#define pb push_back
#define mod 1000000007
#define lim 1000000000000000007
using namespace std;
typedef long long int ll;
typedef pair<int,int> pi;
const int N = (int)1e3+5;
string s;
int dp[N];
map<string,int> mp;
int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
 
    int T=1;
    //cin>>T;
    while (T--) {
        int n,ans=0;
        cin>>n;
        cin.ignore();
        for (int i=1;i<=n;i++) {
            getline(cin,s);
            mp[s]++;
            //cout<<s[i]<<"\n";
        }
        for (auto it:mp) {
            int ct = 0;
            for (auto p:it.first) {
                if (p=='T') ct++;
            }
            if (ct==it.second)
            ans = max(ans,it.second);
        }
        cout<<ans;
    }
}
 

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NApUIFQgRiBUClQgVCBGIEYKRiBGIFQgVApGIEYgVCBU

4
T T F T
T T F F
F F T T
F F T T