#include<bits/stdc++.h>
#define rep(i,a,b) for(int i=int(a);i<int(b);++i)
using namespace std;
typedef long long ll;
int INF = (1LL << 30) - 1;
int MOD = 1e9+7;
main(){
    int N;
    cin >> N;
    vector<pair<int,int>> cnt(1000);
    rep(i,0,1000)cnt[i].second = i;
    rep(i,0,N){
        string s;
        cin >> s;
        cnt[s.length()-2].first++;
    }
    sort(cnt.rbegin(), cnt.rend());
    cout << cnt[0].second << endl;
}