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