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

#define SIZE 100

int compare(const void* arg1, const void* arg2) {
    char* s1 = *((char**)arg1);
    char* s2 = *((char**)arg2);
    return strcmp(s1, s2);
}

int main() {
    char* pole_smernikov[SIZE];
    memset(pole_smernikov, 0, SIZE * sizeof(char*));

    char line[SIZE];
    memset(line, 0, SIZE);

    int pocet_mien_v_poli = 0;

    while (fgets(line, SIZE, stdin) != NULL && strlen(line) > 0) {
        int found = 0;
        for (int i = 0; i < pocet_mien_v_poli; i++) {
            if (memcmp(pole_smernikov[i], line, strlen(line)) == 0) {
                found = 1;
                break;
            }
        }

        if (!found) {
            pole_smernikov[pocet_mien_v_poli] = malloc(strlen(line) + 1);
            memcpy(pole_smernikov[pocet_mien_v_poli], line, strlen(line) + 1);
            pocet_mien_v_poli++;
        }

        memset(line, 0, SIZE);
    }

    qsort(pole_smernikov, pocet_mien_v_poli, sizeof(char*), compare);

    printf("Prijati studenti:\n");
    for (int i = 0; i < pocet_mien_v_poli; i++) {
        printf("%s", pole_smernikov[i]);
    }

    for (int i = 0; i < pocet_mien_v_poli; i++) {
        free(pole_smernikov[i]);
    }

    return 0;
}