#include <iostream>
#include <vector>
 
int main()
{
    int n;
 
    std::cin >> n;
 
    std::vector<std::vector<int>> matritsa(n, std::vector<int>(n));
 
    int i = 1;
 
    for(int d = 0; d < n; d++) {
        for(int y = 0; y <= d; y++) {
            matritsa[y][d] = i++;
        }
 
        for(int x = d - 1; x >= 0; x--) {
            matritsa[d][x] = i++;
        }
    }
 
    for(std::vector<int>& row : matritsa) {
        for(int x : row) {
            std::cout << x << '\t';
        }
 
        std::cout << std::endl;
    }
}
 

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10