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

using namespace std;

vector< vector< vector<char> > > funkcja(string inputdata) {
	vector< vector<char> > tab(2, vector <char>(2)); //declaration 2x2 matrix (4bytes x 4bytes)
	vector< vector< vector<char> > >tab4;

	int counter = 0;
	int k = inputdata.length(); //the length of the input data
	int division = k/4; //dividing into 4, because there are 4 char in each matrix
	int rest=k%4; //the rest from dividing into 4

	for(int t=0;t<division;t++) {
		for (int i = 0; i < 2; i++) {
			for (int j = 0; j < 2; j++) {
				tab[i][j] = inputdata[counter]; //giving input data into the matrix
				counter++;
			}
		}
		tab4.push_back(tab);
	}
	int o=k-rest+1;
	for (int i = 0; i < 2; i++) {
			for (int j = 0; j < 2; j++) {
				tab[i][j] = inputdata[o];
				o++;
			}
		}
    tab4.push_back(tab);

return tab4;
}

int main()
{
	string out= "";
	funkcja(out);
}