#include <bits/stdc++.h>
using namespace std;
typedef long long int ll;
typedef unsigned long long ull;

mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
ll myRand(ll B) {
    return (ull)rng() % B;
}

#include <filesystem>
#include <unistd.h>
using std::filesystem::current_path;
using std::filesystem::directory_iterator;

int main(){
    cin.tie(nullptr);
    ios::sync_with_stdio(false);
    for(auto& p: directory_iterator("./")){
        string s=p.path();
        // cout << s << endl;
        int n=s.size();
        if('0'<=s[n-5] and s[n-5]<='9'){
            // int n=s.size();
            cout << s[n-6] << s[n-5] << endl;
        }
    }
}