diff --git a/histogram.cpp b/histogram.cpp
index e43d6aa..01ecc45 100644
--- a/histogram.cpp
+++ b/histogram.cpp
@@ -3,58 +3,57 @@
 #include <conio.h>
 #include <vector>
 #include "histogram.h"
+#include "histogram_internal.h"
 using namespace std;
 
-void
-find_minmax(vector<double> numbers, double &min, double &max)
-{
-    min = numbers[0];
-    max = numbers[0];
-    for (size_t i = 1; i < numbers.size(); i++)
-        {
-        if (min > numbers[i])
-            min = numbers[i];
-        if (max < numbers[i])
-            max = numbers[i];
+bool
+find_minmax(vector<double> numbers, double &min, double &max) {
+
+    bool notEmpty = true;
+    if (numbers.size() == 0 || numbers.size() == 1)
+        notEmpty = false;
+    else{
+        min = numbers[0];
+        max = numbers[0];
+        for (size_t i = 1; i < numbers.size(); i++) {
+            if (min > numbers[i])
+                min = numbers[i];
+            if (max < numbers[i])
+                max = numbers[i];
         }
+    }
+    return notEmpty;
 }
 
-vector <size_t> make_histogramm(vector<double>numbers, size_t bin_count)
-{
+vector <size_t> make_histogramm(vector<double>numbers, size_t bin_count){
     double min, max;
-    find_minmax(numbers, min, max);
-    double binSize = (max - min) / bin_count;
-    vector<size_t> bins(bin_count);
-    for (size_t i = 0; i < numbers.size(); i++)
-        {
-        bool found = false;
-        for (size_t j = 0; (j <= bin_count - 1) && !found; j++)
-            {
-            auto lo = min + j * binSize;
-            auto hi = min + (j + 1) * binSize;
-            if ((numbers[i] >= lo) && (numbers[i] < hi))
-                {
-                bins[j]++;
-                found = true;
+    bool haveElements = find_minmax(numbers, min, max);
+    if (haveElements){
+        double binSize = (max - min) / bin_count;
+        vector<size_t> bins(bin_count);
+        for (size_t i = 0; i < numbers.size(); i++) {
+            bool found = false;
+            for (size_t j = 0; (j <= bin_count - 1) && !found; j++) {
+                auto lo = min + j * binSize;
+                auto hi = min + (j + 1) * binSize;
+                if ((numbers[i] >= lo) && (numbers[i] < hi)) {
+                    bins[j]++;
+                    found = true;
                 }
             }
-        if (!found)
-            bins[bin_count - 1]++;
+            if (!found)
+                bins[bin_count - 1]++;
         }
-    int max_count = bins[0];
-    for (size_t i = 0; i < bin_count; i++)
-    {
-        if (bins[i] > max_count)
-            max_count = bins[i];
+        return bins;
     }
-    if (max_count > 76)
-    {
-        for (size_t i = 0; i < bin_count; i++)
-        {
-            int count = bins[i];
-            size_t height = 76 * (static_cast<double>(count) / max_count);
-            bins[i] = height;
-        }
-    }
-    return bins;
+    else
+        cerr << "Empty massive of numbers";
+}
+bool check_interval(size_t interval){
+    bool need;
+    if (interval > 9 || interval < 2)
+        need = false;
+    else
+        need = true;
+    return need;
 }
diff --git a/histogram_internal.h b/histogram_internal.h
index 52f6582..264dae7 100644
--- a/histogram_internal.h
+++ b/histogram_internal.h
@@ -3,6 +3,6 @@
 
 #include <vector>
 
-void find_minmax(std::vector<double> numbers, double &min, double &max);
+bool find_minmax(std::vector<double> numbers, double &min, double &max);
 
 #endif // HISTOGRAM_INTERNAL_H_INCLUDED
diff --git a/lab3.cbp b/lab3.cbp
index 73e8680..5632558 100644
--- a/lab3.cbp
+++ b/lab3.cbp
@@ -14,6 +14,11 @@
 				<Compiler>
 					<Add option="-g" />
 				</Compiler>
+				<Linker>
+					<Add option="-static-libstdc++" />
+					<Add option="-static-libgcc" />
+					<Add option="-static" />
+				</Linker>
 			</Target>
 			<Target title="Release">
 				<Option output="bin/Release/lab3" prefix_auto="1" extension_auto="1" />
@@ -37,6 +42,8 @@
 		<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" />
 		<Extensions>
diff --git a/main.cpp b/main.cpp
index 092894b..56a63d3 100644
--- a/main.cpp
+++ b/main.cpp
@@ -1,50 +1,42 @@
-#include <vector>
 #include <math.h>
 #include <iostream>
 #include <conio.h>
-#include <fstream>
+#include <vector>
 #include "histogram.h"
 #include "text.h"
-
+#include "svg.h"
+#include "histogram_internal.h"
 using namespace std;
 
-const size_t SCREEN_WIDTH = 80;
-const size_t MAX_ASTERISK = SCREEN_WIDTH - 3 - 1;
-
-
-struct Input
-{
+struct Input {
     vector<double> numbers;
     size_t bin_count{};
+    size_t interval;
 };
 
-
 Input
-input_data(){
-    cerr << "Input numbers count: ";
+input_data(istream &tin, bool prompt){
+    if (prompt)
+        cerr << "Input numbers count: ";
     size_t number_count;
-    cin >> number_count;
+    tin >> number_count;
     Input in;
     in.numbers.resize(number_count);
-    cerr << "Input numbers: ";
-    for (size_t i = 0; i < number_count; i++)
-        {
-        cin >> in.numbers[i];
-        }
-    cerr << "Input bin count: ";
-    cin >> in.bin_count;
+    if (prompt)
+        cerr << "Input numbers: ";
+    for (size_t i = 0; i < number_count; i++) {
+        tin >> in.numbers[i];
+    }
+    if (prompt)
+        cerr << "Input bin count: ";
+    tin >> in.bin_count;
     return in;
 }
 
 
-int main()
-{
-
- Input in = input_data();
-
- auto bins = make_histogramm(in.numbers, in.bin_count);
-
- show_histogramm(bins);
-
- return 0;
+int main() {
+    Input in = input_data(cin, false);
+    auto bins = make_histogramm(in.numbers, in.bin_count);
+    show_histogram_svg(bins);
+    return 0;
 }