diff --git a/histogram.cpp b/histogram.cpp
index 268ee01..3e35c3e 100644
--- a/histogram.cpp
+++ b/histogram.cpp
@@ -1,47 +1,43 @@
 #include "histogram.h"
 #include <vector>
+#include <numeric>
 using namespace std;
 
-
 void find_minmax(const vector<double>& numbers, double& min, double& max) {
-    if (numbers.empty())
-    {
-        min = 0;
-        max = 0;
-        return;
-    }
+    if (numbers.empty()) return;
     max = numbers[0];
     min = numbers[0];
     for (double x : numbers) {
         if (x < min) min = x;
-        else if (x > max) max = x;
+        if (x > max) max = x;
     }
 }
 
-
-vector<size_t> make_histogram (vector<double> numbers, size_t bin_count)
-{
+vector<size_t> make_histogram(vector<double> numbers, size_t bin_count) {
     double min, max;
-    find_minmax (numbers, min, max);
+    find_minmax(numbers, min, max);
     double bin_size = (max - min) / bin_count;
     vector<size_t> bins(bin_count);
-    for (size_t i = 0; i < numbers.size(); i++)
-    {
+
+    for (size_t i = 0; i < numbers.size(); i++) {
         bool found = false;
-        for (size_t j = 0; (j < bin_count - 1) && !found; j++)
-        {
+        for (size_t j = 0; (j < bin_count - 1) && !found; j++) {
             auto lo = min + j * bin_size;
             auto hi = min + (j + 1) * bin_size;
-            if ((lo <= numbers[i]) && (numbers[i] < hi))
-            {
+            if ((lo <= numbers[i]) && (numbers[i] < hi)) {
                 bins[j]++;
                 found = true;
             }
         }
-        if (!found)
-        {
+        if (!found) {
             bins[bin_count - 1]++;
         }
     }
     return bins;
 }
+
+double calculate_average_height(const vector<size_t>& bins) {
+    if (bins.empty()) return 0.0;
+    double sum = accumulate(bins.begin(), bins.end(), 0.0);
+    return sum / bins.size();
+}
diff --git a/histogram.h b/histogram.h
index 1ee7f4d..4821faa 100644
--- a/histogram.h
+++ b/histogram.h
@@ -1,9 +1,8 @@
 #ifndef HISTOGRAM_H_INCLUDED
 #define HISTOGRAM_H_INCLUDED
-
 #include <vector>
 using namespace std;
-
 vector<size_t> make_histogram(vector<double> numbers, size_t bin_count);
+double calculate_average_height(const vector<size_t>& bins);
 
 #endif
diff --git a/lab03.cbp b/lab03.cbp
index ee5e5bc..a413538 100644
--- a/lab03.cbp
+++ b/lab03.cbp
@@ -37,9 +37,10 @@
 		<Unit filename="histogram.h" />
 		<Unit filename="histogram_internal.h" />
 		<Unit filename="main.cpp" />
+		<Unit filename="svg.cpp" />
+		<Unit filename="svg.h" />
 		<Unit filename="text.cpp" />
 		<Unit filename="text.h" />
-		<Unit filename="unittest.cpp" />
 		<Extensions>
 			<lib_finder disable_auto="1" />
 		</Extensions>
diff --git a/main.cpp b/main.cpp
index 584252c..8f132ec 100644
--- a/main.cpp
+++ b/main.cpp
@@ -2,6 +2,8 @@
 #include <vector>
 #include "histogram.h"
 #include "text.h"
+#include "svg.h"
+#include "histogram_internal.h"
 using namespace std;
 
 
@@ -28,12 +30,8 @@ Input input_data(){
 
 int main()
 {
-    if (in.numbers.empty()) {
-    cerr << "Error: The data set is empty." << endl;
-    return EXIT_FAILURE;
-    }
     auto in = input_data();
     auto bins = make_histogram(in.numbers, in.bin_count);
-    show_histogram_text(bins, in.bin_count);
+    show_histogram_svg(bins);
     return 0;
 }
diff --git a/svg.cpp b/svg.cpp
index f17f5a8..e6c6c64 100644
--- a/svg.cpp
+++ b/svg.cpp
@@ -2,7 +2,7 @@
 #include <vector>
 #include <string>
 #include "svg.h"
-
+#include "histogram.h"
 using namespace std;
 
 void svg_begin(double width, double height) {
@@ -22,7 +22,7 @@ void svg_text(double left, double baseline, string text) {
     cout << "<text x='" << left << "' y='" << baseline << "'>" << text << "</text>\n";
 }
 
-void svg_rect(double x, double y, double width, double height, string stroke = "black", string fill = "black") {
+void svg_rect(double x, double y, double width, double height, string stroke, string fill) {
     cout << "<rect x='" << x << "' y='" << y << "' width='" << width << "' height='" << height
          << "' stroke='" << stroke << "' fill='" << fill << "' />\n";
 }
@@ -51,10 +51,13 @@ void show_histogram_svg(const vector<size_t>& bins) {
         }
     }
 
+    double avg_height = calculate_average_height(bins);
+
     for (size_t bin : bins) {
         const double bin_width = MAX_WIDTH * (static_cast<double>(bin) / max_count);
         svg_text(TEXT_LEFT, top + TEXT_BASELINE, to_string(bin));
-        svg_rect(TEXT_WIDTH, top, bin_width, BIN_HEIGHT, "black", "red");
+        string fill_color = (bin > avg_height) ? "red" : "green";
+        svg_rect(TEXT_WIDTH, top, bin_width, BIN_HEIGHT, "black", fill_color);
         top += BIN_HEIGHT;
     }
 
diff --git a/svg.h b/svg.h
index 44245d0..7b20dc0 100644
--- a/svg.h
+++ b/svg.h
@@ -1,9 +1,8 @@
 #ifndef SVG_H_INCLUDED
 #define SVG_H_INCLUDED
-
 #include <vector>
 #include <cstddef>
 
 void show_histogram_svg(const std::vector<size_t>& bins);
 
-#endif // SVG_H_INCLUDED
+#endif