diff --git a/svg.cpp b/svg.cpp
index c98b906..24dd384 100644
--- a/svg.cpp
+++ b/svg.cpp
@@ -5,8 +5,24 @@
 #include <string>
 #include "svg.h"
 
+
 using namespace std;
 
+double sr(const vector<size_t>& bins) {
+    if (bins.empty()) {
+        return 0;
+    }
+    size_t totalHeight = 0;
+    for (size_t bin : bins) {
+        totalHeight += bin;
+    }
+
+    return static_cast<double>(totalHeight) / bins.size();
+}
+
+
+
+
 void
 svg_begin(double width, double height)
 {
@@ -50,8 +66,10 @@ show_histogram_svg(const vector<size_t>& bins)
     const auto BLOCK_WIDTH = 10;
     const auto BLACK = "black";
     const auto RED = "red";
+    const auto GREEN = "green";
     const auto MAX_WIDTH = IMAGE_WIDTH-TEXT_WIDTH;
 
+    size_t x = sr(bins);
 
     svg_begin(IMAGE_WIDTH,IMAGE_HEIGHT);
 
@@ -69,7 +87,13 @@ show_histogram_svg(const vector<size_t>& bins)
     {
         double bin_width = (MAX_WIDTH)*(bin/max_count);
         svg_text(TEXT_LEFT, top + TEXT_BASELINE, to_string(bin));
+        if (bin_width<=MAX_WIDTH/max_count*x)
+        {
+            svg_rect(TEXT_WIDTH, top, bin_width, BIN_HEIGHT, BLACK, GREEN);
+        }
+        else{
         svg_rect(TEXT_WIDTH, top, bin_width, BIN_HEIGHT, BLACK, RED);
+        }
         top += BIN_HEIGHT;
     }