#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <stdbool.h>

int main()
{
    int N;
    scanf("%d", &N); fgetc(stdin);
    for (int i = 0; i < N; i++) {
        char line[N + 1];
        scanf("%[^\n]", line); fgetc(stdin);
    }

    // Write an answer using printf(). DON'T FORGET THE TRAILING \n
    // To debug: fprintf(stderr, "Debug messages...\n");

    printf("number_of_sides\n");

    return 0;
}