diff --git a/a2/program.c b/a2/program.c
index cbd43f4..4cd53d1 100644
--- a/a2/program.c
+++ b/a2/program.c
@@ -1,29 +1,37 @@
 #include <stdlib.h>
 #include <string.h>
 #include <stdio.h>
+#ifndef PANGRAM_H
+#define PANGRAM_H
+
+#include <stdbool.h>
+
+bool is_pangram(const char *sentence);
+
+#endif
 // Please implement the header file from the assignment to fulfill the unit tests..
- // You can add any function  
-#include "pangram.h"
+ // You can add any function
+//#include "pangram.h"
 
 
 bool is_pangram(const char *sentence) {
-	char alphabet[] = "abcdefghijklmnopqrstuvwxyz";
-	char is_char_contained[] = "00000000000000000000000000";
-	for (int i = 0; i < sizeof(sentence); i++) {
-		int iterator = 0;
-		for (int l = 0; l< 26; l++) {
-			if (sentence[i] == sentence[iterator]) {
-				is_char_contained[iterator] = 1;
-				break;
-			}
-			iterator++;
-		}
-	}
+        char alphabet[] = "abcdefghijklmnopqrstuvwxyz";
+        int is_char_contained[26] = {0};
+        int sentence_len = strlen(sentence);
+        for (int i = 0; i < sentence_len; i++) {
+                int iterator = 0;
+                for (int l = 0; l< 26; l++) {
+                        if (sentence[i] == alphabet[iterator]) {
+                                is_char_contained[iterator] = 1;
+                                break;
+                        }
+                        iterator++;
+                }
+        }
 
-	for (int i = 0; i<26;i++) {
-		if (is_char_contained[i] == 0) return 0;
-	}
-	return 1;
+        for (int i = 0; i<26;i++) {
+                if (is_char_contained[i] == 0) return 0;
+        }
+        return 1;
 
-	return 0;
 }
diff --git a/du4/program.c b/du4/program.c
index a5a844c..b953969 100644
--- a/du4/program.c
+++ b/du4/program.c
@@ -3,19 +3,27 @@
 #include <ctype.h>
 #include <stdlib.h>
 
+int compare_names(const void *a, const void *b){
+   return strcasecmp((const char*)a, (const char*)b);
+}
+
+int compare_int(const void* a, const void* b) {
+    return (*(int*)b - *(int*)a);
+}
+
 int main() {
 	char buffer[999];
-	char voting[99][10];
+	int voting[99];
 	char names[99][50];
 	int count = 0;
 	while(fgets(buffer, sizeof(buffer), stdin) != NULL) {
-		char current_votes[10] = "";
+		int current_votes = 0;
 		char current_name[50] = "";
-		sscanf(buffer, "%s %[^\n]", current_votes, current_name);
+		sscanf(buffer, "%d %[^\n]", &current_votes, current_name);
 		int is_contained = 0;
 		for (int i=0; i<count; i++) {
 			if (strcmp(names[i], current_name) == 0) {
-				sprintf(voting[i], "%d", atoi(voting[i]) + atoi(current_votes));
+				voting[i] = voting[i] + current_votes;
 				is_contained = 1;
 				break;
 			}/*
@@ -28,7 +36,7 @@ int main() {
 		}
 		if (!is_contained) {
 			 strcpy(names[count], current_name);
-                         strcpy(voting[count], current_votes);
+                         voting[count] = current_votes;
                          count++;
 		}
 
@@ -36,8 +44,44 @@ int main() {
 	if (count == 0) {
 		return 1;
 	}
-	//printf("%s %s\n", voting[0], names[0]);
-	
+	int sorted_voting[99];
+	char names_after_sorting[99][50];
+	char names_while_sorting[99][50];
+	int number_count = 0;
+	int name_index = 0;
+	int last_number = -1;
+	for (int i=0;i<count;i++) {
+		sorted_voting[i] = voting[i];
+        }
+	qsort(sorted_voting, count, sizeof(int), compare_int);
+
+	for (int i=0;i<count;i++) {
+		memset(names_while_sorting, 0, sizeof(names_while_sorting));
+		int names_loop_index = 0;
+		if (sorted_voting[i] == last_number) continue;
+		for (int l=0;l<count;l++) {
+			if (sorted_voting[i] == voting[l]) {
+				strcpy(names_while_sorting[names_loop_index], names[l]);
+				number_count++;
+				names_loop_index++;
+				
+			} 
+		}
+		qsort(names_while_sorting, number_count-name_index, sizeof(char[50]), compare_names);
+		for (int l=0;l<number_count-name_index;l++){
+			strcpy(names_after_sorting[name_index+l], names_while_sorting[l]);
+		}
+		name_index = number_count;
+		last_number = sorted_voting[i];
+
+        }
+
+
+	printf("Vysledky:\n");
+	for (int i=0;i<count;i++) {
+		//printf("%d %s-------\n", voting[i], names[i]);	
+		printf("%d %s\n", sorted_voting[i], names_after_sorting[i]);
+	}
 	return 0;
 }