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

std::vector<std::vector<int>> readMatrice(int& rowCount) {
	std::cin >> rowCount;
	std::cin.ignore();
	std::vector<std::vector<int>> vec;
	while (true) {
		std::string line;
		getline(std::cin, line);
		std::vector<int> row;

		std::istringstream istr(line);
		int num;
		while (istr >> num) {
			row.push_back(num);
		}
		vec.push_back(row);

		if (vec.size() == rowCount) {
			break;
		}
	}
	return vec;
}

void printMatrice(std::vector<std::vector<int>>& matrice) {
	std::cout << std::endl;
	for (auto& row : matrice) {
		for (int i = 0; i < row.size(); ++i) {
			std::cout << row[i] << ' ';
		}
		std::cout << std::endl;
	}
}

int main() {
	int rowCount = 0;
	std::vector<std::vector<int>> matrice = readMatrice(rowCount);
	printMatrice(matrice);
}