diff --git a/du6/program.c b/du6/program.c
new file mode 100644
index 0000000..99c3c59
--- /dev/null
+++ b/du6/program.c
@@ -0,0 +1,81 @@
+nclude <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+
+
+int main() {
+
+   char database[200][30];
+   char string[30];
+   int error = 0;
+   int count = 0;
+   int i = 0;
+   
+   memset(database, 0, sizeof(database));
+   memset(string, 0, 30);
+   char *r;
+   r = fgets(string, 1000, stdin);
+   if (r == NULL)
+      return 0;
+    sscanf(string, "%d", &count);
+   if (strlen(r) == 1 || count < 1) {
+      puts("Nespravny vstup");
+      return 0;
+   }
+   for (int с = 0; с < 30; с++) {
+      if (isalpha(r[с])) {
+         error = 1;
+         break;
+      }
+   }
+   if (error != 0) {
+      puts("Nespravny vstup");
+      return 0;
+   }
+   
+
+   while (strlen(r) > 1) {
+      memset(string, 0, 30);
+      r = fgets(string, 30, stdin);
+      if (r == NULL)
+         break;
+      error = 0;
+      for (int j = 0; j < 200; j++) {
+
+         if (strcmp(database[j], string) == 0) {
+            error = 1;
+            break;
+         }
+
+      }
+
+      if (error == 0 && strlen(r) > 1) {
+         strcpy(database[i], r);
+         i++;
+      }
+
+   }
+   if (i==0) {
+   puts("Ziadne prihlasky");
+   }
+   for (int j = 0; j < i; j++) {
+      for (int j = 0; j < i; j++) {
+         if (strcmp(database[j], database[j]) < 0) {
+            char buffer[30];
+            memset(buffer, 0, sizeof(buffer));
+            strcpy(buffer, database[j]);
+            strcpy(database[j], database[j]);
+            strcpy(database[j], buffer);
+         }
+      }
+   }
+   puts("Prijati studenti:");
+   for (int j = 0; j < i; j++) {
+      if (j == count) {
+         puts("Neprijati studenti:");
+      }
+      printf("%s", database[j]);
+   }
+   return 0;
+}