diff --git a/du4/program b/du4/program
new file mode 100755
index 0000000..6ac2ff8
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..f2acd33
--- /dev/null
+++ b/du4/program.c
@@ -0,0 +1,58 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define SIZE 100
+
+struct student {
+    char name[SIZE];
+    int votes;
+};
+
+struct student databaza[SIZE];
+int size = 0;
+
+int find_student(const char* name) {
+    for (int i = 0; i < size; i++) {
+        if (strcmp(databaza[i].name, name) == 0) {
+            return i;
+        }
+    }
+    return -1;
+}
+
+int main() {
+    char line[SIZE];
+    memset(databaza, 0, sizeof(databaza));
+
+    while (fgets(line, SIZE, stdin)) {
+        char* end = NULL;
+        int votes = strtol(line, &end, 10);
+
+        if (votes <= 0) {
+            continue;
+        }
+
+        char name[SIZE];
+        memset(name, 0, SIZE);
+        strncpy(name, end + 1, strlen(end + 1) - 1);
+
+        int id = find_student(name);
+
+        if (id < 0) {
+            strncpy(databaza[size].name, name, SIZE - 1);
+            databaza[size].votes = votes;
+            size++;
+        } else {
+            databaza[id].votes += votes;
+        }
+    }
+
+    printf("Vysledky:\n");
+    for (int i = 0; i < size; i++) {
+        printf("%d %s\n", databaza[i].votes, databaza[i].name);
+    }
+
+    return 0;
+}
+