#include <stdio.h>

int main() {
    int hour;
    scanf("%d", &hour);
    if (hour >=0 && hour <= 11) {
        printf("Good morning"); 
        } else if (hour >= 12 && hour <= 16);{
            printf("Good afternoon");
        } else if (hour >= 17 && hour <= 23) {
            printf("Good evening");
            } else {
                printf("Invalid input");
            }
                return 0;
        }