#include <stdio.h>
  
int main()
{
    int rows = 5;
  
    for (int i = 0; i < rows; i++) 
    {

        for (int j = 0; j < 2 * (rows - i) - 1; j++) {
            printf(" ");
        }
        
        for (int k = 0; k < 2 * i + 1; k++) {
            printf("%d ", k + 1);
        }
        printf("\n");
    }
    return 0;
}

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