#include <iostream>
#include <vector>
#include <map>
#include <string>
#include <utility>
#include <queue>
#include <stack>
#include <cmath>
#include <numeric>

#define rep(i,j,k) for(int i=(int)j;i<(int)k;i++)
#define ll long long
using namespace std;
int main(){
    int n;
    cin>>n;
    vector<int> v(1010,0);
    for(int i=0;i<n;i++){
        string s;
        cin>>s;
        v[s.size()-2]++;
    }
    int maxnum,ans;
    for(int i=0;i<n;i++){
        if(maxnum<=v[i]){
            maxnum=v[i];
            ans=i;
        }
    }
    cout<<ans<<endl;
}