diff --git a/main.cpp b/main.cpp
index faea961..5167e89 100644
--- a/main.cpp
+++ b/main.cpp
@@ -14,11 +14,13 @@ struct Input
 };
 
 Input
-input_data(istream& in)
+input_data(istream& in, bool prompt)
 {
     size_t number_count;
+    if (prompt)
     cerr<<"Enter number count: ";
     in >> number_count;
+    if (prompt)
     cerr << "Enter numbers : " << endl;
 
     Input ik;
@@ -27,6 +29,7 @@ input_data(istream& in)
     {
         cin >> ik.numbers[i];
     }
+    if (prompt)
     cerr<< "Enter bin count: ";
     cin >> ik.bin_count;
     return ik;
@@ -34,7 +37,7 @@ input_data(istream& in)
 
 int main()
 {
-    auto in = input_data(cin);
+    auto in = input_data(cin, true);
     auto bins = make_histogram(in.numbers, in.bin_count);
     show_histogram_svg(bins);
     getch();
diff --git a/svg.cpp b/svg.cpp
index 4edb6d8..7ce317f 100644
--- a/svg.cpp
+++ b/svg.cpp
@@ -4,21 +4,9 @@
 #include <vector>
 #include <string>
 #include "svg.h"
-//#include "sr.h"
-
-//using namespace std;
-//
-//double sr(const vector<size_t>& bins) {
-//    size_t totalHeight = 0;
-//    for (size_t bin : bins) {
-//        totalHeight += bin;
-//    }
-//
-//    return static_cast<double>(totalHeight) / bins.size();
-//}
-
-
+#include "sr.h"
 
+using namespace std;
 
 void
 svg_begin(double width, double height)