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