diff --git a/du4/program b/du4/program
new file mode 100755
index 0000000..d81169d
Binary files /dev/null and b/du4/program differ
diff --git a/du4/program.c b/du4/program.c
new file mode 100644
index 0000000..7687467
--- /dev/null
+++ b/du4/program.c
@@ -0,0 +1,64 @@
+#include <stdio.h>
+#include <string.h>
+
+int main() {
+    char listM[20][20];
+    int listH[50];
+    int studentCount = 0;
+    int aHlasy;
+    char aMeno[30];
+    char medzera;
+    int i;
+    
+    while (scanf("%d", &aHlasy) == 1) {
+        scanf("%c", &medzera);
+        fgets(aMeno, 30, stdin);
+        aMeno[strlen(aMeno)-1] = '\0';
+        
+        for (i = 0; i < studentCount; i++) {
+            if (strcmp(listM[i], aMeno) == 0) {
+                listH[i] += aHlasy;
+                break;
+            }
+        }
+        
+        if (i == studentCount) {
+            strcpy(listM[studentCount], aMeno);
+            listH[studentCount] = aHlasy;
+            studentCount++;
+        }
+    }
+    
+    if (studentCount == 0) {
+        printf("Chyba: Ziadne hlasy neboli nacitane\n");
+        return 1;
+    }
+    
+    for (int i = 0; i < studentCount; i++) {
+        for (int j = 0; j < studentCount - 1; j++) {
+            if (listH[j] < listH[j + 1]) {
+                int docasneHlasy = listH[j];
+                listH[j] = listH[j + 1];
+                listH[j + 1] = docasneHlasy;
+                
+                char docasneMeno[20];
+                strcpy(docasneMeno, listM[j]);
+                strcpy(listM[j], listM[j + 1]);
+                strcpy(listM[j + 1], docasneMeno);
+            }
+            else if (listH[j] == listH[j + 1] && strcmp(listM[j], listM[j + 1]) > 0) {
+                char docasneMeno[20];
+                strcpy(docasneMeno, listM[j]);
+                strcpy(listM[j], listM[j + 1]);
+                strcpy(listM[j + 1], docasneMeno);
+            }
+        }
+    }
+    
+    printf("Vysledky:\n");
+    for (int i = 0; i < studentCount; i++) {
+        printf("%d %s\n", listH[i], listM[i]);
+    }
+    
+    return 0;
+}