#include <vector>
#include <iostream>

using namespace std;

template<typename T>
class Table {
private:
    vector<vector<T>> data;
    pair<size_t, size_t> sz;
public:
    Table(size_t rows, size_t columns) {
        resize(rows, columns);
    }

    vector<T>& operator[](size_t i) {
        return data[i];
    }

    const vector<T>& operator[](size_t i) const {
        return data[i];
    }

    void resize(size_t rows, size_t columns) {
        sz.first = rows;
        sz.second = columns;

        data.resize(rows);

        for (size_t i = 0; i != rows; ++i) {
            data[i].resize(columns);
        }
    }

    pair<size_t, size_t> size() const {
        return sz;
    }
};