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#include <iostream>
#include <string>
#include <vector>
#include <array>

#include <algorithm>

 

using namespace std;

 

/*int main() {
    vector<string> num_array;
    int sum = 0;
    
    while (true) {
        string num;
        
        cout << "숫자를 입력하세요 : ";
        cin >> num;
        cout << num << endl;

        if (num == "q") {
            break;
        }
        num_array.push_back(num);
    }

    for (int i=0;i<num_array.size();i++) {
        sum += stoi(num_array.at(i));
    }
    
    cout << "합은 : " << sum << endl;
    cout << "갯수는 : " << num_array.size() << endl;
    
    return 0;
}*/

//###############################################################################

/*int main() {
    array<int,33> list1, list2;

    int idx = 0;
    for (int i=1;i<100;i++) {
        if (i % 3 == 0) {
            list1[idx] = i;
            idx++;
        }
    }

    idx = 0;
    for (int i=100;i>0;i--) {
        if (i % 3 == 0) {
            list2[idx] = i;
            idx++;
        }
    }

    for (int i=0;i<list1.size();i++) {
        cout << list1[i] << ", ";
    }
    cout << endl;

    for (int i=0;i<list2.size();i++) {
        cout << list2[i] << ", ";
    }

    return 0;
}*/

//###############################################################################

 

/*int main() {
    vector<string> parking_lot;

    string car_number;
    string action;
    while (true) {
        cout << "주차 or 출차 or q : ";
        cin >> action;
        cout << action << endl;
        
        cout << "차 번호를 입력하세요 : ";
        cin >> car_number;
        cout << car_number << endl;

        if (action == "q") {
            cout << "현재 주차장에 있는 차 대수 : " << parking_lot.size() << endl;
            break;
        }
        else if (action == "주차") {
            if (parking_lot.size() == 5) {
                cout << "주차장이 모두 찼습니다." << endl;
            }
            else {
                parking_lot.push_back(car_number);
                cout << car_number << " 차량을 주차하였습니다." << endl;
            }
        }        
        else if (action == "출차") {
            if (parking_lot.size() != 0) {
                if (find(parking_lot.begin(), parking_lot.end(), car_number) != parking_lot.end()){
                    if (parking_lot.back() == car_number) {
                        parking_lot.pop_back();
                        cout << car_number << " 차량을 출차하였습니다." << endl;
                    }
                    else {
                        cout << car_number << " 차량은 현재 출차할 수 없는 차량입니다." << endl;
                    }   
                }
                else {
                    cout << car_number << " 차량은 없는 차량입니다." << endl;
                }
            }
            else {
                cout << "출차할 차량이 없습니다." << endl;
            }
        }
        else {
            cout << "잘못된 입력입니다." << endl;
        }

        cout << "현재 주차 상황 : ";
        for (int i=0;i<parking_lot.size();i++){
            cout << parking_lot[i] << ' ';
        }
        cout << endl << endl;
    }
    
    return 0;
}*/

//###############################################################################

/*int main() {
    vector<vector<int>> three_steps;
    vector<int> new_row;

    for (int i=1;i<101;i++) {       
        if (i % 3 == 0 and i % 10 != 0) {
            new_row.push_back(i);
        }
        if (i % 10 == 0) {
            three_steps.push_back(new_row);
            new_row.clear();
            if (i % 3 == 0) {
                new_row.push_back(i);
            }
        }
    }

    for (int i=0;i<three_steps.size();i++) {
        for (int j=0;j<three_steps[i].size();j++) {
            cout << three_steps[i][j] << ' ';
        }
        cout << endl;
    }
    
    return 0;
}*/