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