#include <iostream>
#include <iomanip>
#include <algorithm>
#include <vector>
 
int main()
{
	auto v = std::vector<std::vector<int>>(5, std::vector<int>(5, 0));
	for (auto &vec : v)
		std::fill(std::begin(vec), std::end(vec), 0);
 
	for (size_t i = 0; i < v.size(); ++i)
		v[i][i] = 4;
 
	for (size_t i = 1; i < v.size(); ++i) {
		auto il = i - 1;
		v[i][il] = 2;
		v[il][i] = 8;
	}
 
	for (auto &vec : v) {
		for (auto val : vec)
			std::cout << std::setw(3) << val;
		std::cout << std::endl;
	}
 
}
 

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