#include<stdio.h>
int main()
{
    int n;
    scanf("%d", &n);
    if (n < 0)
    {
        printf("Invalid Input");
        return 0;
    }
    int matrix[n][n];
   for (int i = 0; i < n; i++)
    {
        for (int j = 0; j < n; j++)
        {
            scanf("%d", &matrix[i][j]);
        }
    }
    int sum = 0;
    int product = 1;
   for (int i = 0; i < n; i++)
    {
        sum += matirx[i][i];
        product *= matrix[i][i];
    }
    printf("sum:%d\n", sum);
    printf("product:%d", product);
    return 0;
    }