diff --git a/histogram.cpp b/histogram.cpp
new file mode 100644
index 0000000..95417a4
--- /dev/null
+++ b/histogram.cpp
@@ -0,0 +1,86 @@
+/*#include "histogram.h"
+
+void
+find_minmax(const std::vector<double>& numbers, double& min, double& max) {
+    min = numbers[0];
+    max = numbers[0];
+    for (double x : numbers){
+        if (x < min){
+            min = x;
+        }
+        else if (x > max){
+            max = x;
+        }
+
+    }
+}
+
+std::vector<size_t> make_histogram(const std::vector<double>& numbers, size_t& bin_count){
+    std::vector<size_t> bins(bin_count);
+    double max, min = 0;
+    find_minmax(numbers, min, max);
+    double bin_size = (max - min) / 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 * bin_size;
+            auto hi = min + (j + 1) * bin_size;
+            if ((lo <= numbers[i]) && (numbers[i] < hi)) {
+                bins[j]++;
+                found = true;
+            }
+        }
+        if (!found) {
+            bins[bin_count - 1]++;
+
+        }
+    }
+    return bins;
+}
+*/
+#include "histogram.h"
+void
+find_minmax(const std::vector<double>& numbers, double& min, double& max) {
+    min = numbers[0];
+    max = numbers[0];
+    for (double x : numbers)
+    {
+        if (x < min){
+            min = x;
+        }
+        else if (x > max){
+            max = x;
+        }
+    }
+}
+
+std::vector <size_t>
+make_histogram(const std::vector<double>& numbers, size_t & bin_count, size_t & number_count, size_t & max_count) {
+    double min, max;
+    find_minmax(numbers, min, max);
+    double bin_size = (max - min) / bin_count;
+    std::vector<size_t> bins(bin_count);
+    max_count = bins[0];
+    for (size_t i = 0; i < number_count; i++){
+        bool found = false;
+        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)){
+                bins[j]++;
+                found = true;
+            }
+            if (bins[j] > max_count){
+                max_count = bins[j];
+            }
+        }
+        if (!found){
+            bins[bin_count - 1]++;
+        }
+        if (bins[bin_count - 1] > max_count){
+            max_count = bins[bin_count - 1];
+        }
+    }
+    return bins;
+}
diff --git a/histogram.h b/histogram.h
new file mode 100644
index 0000000..ca901fe
--- /dev/null
+++ b/histogram.h
@@ -0,0 +1,12 @@
+/*#pragma once
+#include <iostream>
+#include <vector>
+
+std::vector<size_t>
+make_histogram(const std::vector<double>& numbers, size_t & bin_count);*/
+#pragma once
+#include <iostream>
+#include <vector>
+
+std::vector<size_t>
+make_histogram(const std::vector<double>& numbers, size_t & bin_count, size_t & number_count, size_t & max_count);
diff --git a/histogram_internal.h b/histogram_internal.h
new file mode 100644
index 0000000..0c4f9ad
--- /dev/null
+++ b/histogram_internal.h
@@ -0,0 +1,12 @@
+/*#pragma once
+#include <iostream>
+#include <vector>
+
+void
+find_minmax(const std::vector<double>& numbers, double& min, double& max);*/
+#pragma once
+#include <iostream>
+#include <vector>
+
+void
+find_minmax(const std::vector<double>& numbers, double& min, double& max);
diff --git a/main.cpp b/main.cpp
index c2883a7..d001a1f 100644
--- a/main.cpp
+++ b/main.cpp
@@ -1,5 +1,9 @@
-#include <iostream>
+/*#include <iostream>
 #include <vector>
+#include "histogram.h"
+#include "text.h"
+#include "histogram_internal.h"
+#include "svg.h"
 
 using namespace std;
 
@@ -14,7 +18,7 @@ Input
 input_data() {
     size_t number_count;
     cerr<<"Enter number count";
-    cin >> number_count;
+    cin>>number_count;
     Input in;
     in.numbers.resize(number_count);
     vector<double> numbers(number_count);
@@ -27,79 +31,51 @@ cerr<<"Enter bin count";
 cin >> in.bin_count;
 return in;
 }
-void
-find_minmax(const vector<double>& numbers, double& min, double& max) {
-    min = numbers[0];
-    max = numbers[0];
-    for (double x : numbers){
-        if (x < min){
-            min = x;
-        }
-        else if (x > max){
-            max = x;
-        }
-    }
-}
 
-vector<size_t> make_histogram(const vector<double> numbers, size_t bin_count){
-    vector<size_t> bins(bin_count);
-    double max, min = 0;
-    find_minmax(numbers, min, max);
-    double bin_size = (max - min) / bin_count;
+int main()
+{
+    auto in = input_data();
+    auto bins = make_histogram(in.numbers, in.bin_count);
+    show_histogram_svg(bins, in.max_count, in.bin_count);
+    return 0;
+}*/
+#include <iostream>
+#include <vector>
+#include "histogram.h"
+#include "text.h"
+#include "svg.h"
+using namespace std;
+struct Input {
+    vector<double> numbers;
+    size_t bin_count{};
+    size_t number_count{};
+    size_t max_count{};
+};
+Input
+input_data() {
+    Input in;
+    cerr << "Enter number count: ";
+    cin >> in.number_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 * bin_size;
-            auto hi = min + (j + 1) * bin_size;
-            if ((lo <= numbers[i]) && (numbers[i] < hi)) {
-                bins[j]++;
-                found = true;
-            }
-        }
-        if (!found) {
-            bins[bin_count - 1]++;
 
-        }
+    vector<double> numbers(in.number_count);
+    in.numbers.resize(in.number_count);
+    for (size_t i = 0; i < in.number_count; i++) {
+        cin >> in.numbers[i];
     }
-    return bins;
-}
-
-void
-show_histogram_text(vector<size_t>& bins, size_t & max_count,size_t & bin_count){
-const size_t SCREEN_WIDTH = 80;
-const size_t MAX_ASTERISK = SCREEN_WIDTH - 3 - 1;
-if (max_count > MAX_ASTERISK){
-        vector<size_t> hights(bin_count);
-        for (size_t i = 0; i < bin_count; i++){
-            size_t height = MAX_ASTERISK * (static_cast<double>(bins[i]) / max_count);
-            hights[i] = height;
-        }
 
-        for (size_t i = 0; i < bin_count; i++){
-            printf("%3d|", bins[i]);
-            for (size_t j = 0; j < hights[i]; j++){
-                cout<<"*";
-            }
-            cout << endl;
-        }
-    }
-    else{
-        for (size_t i = 0; i < bin_count; i++)
-        {
-            printf("%3d|", bins[i]);
-            for (size_t j = 0; j < bins[i]; j++){
-                cout<<"*";
-            }
-            cout << endl;
-        }
-    }
+    size_t bin_count;
+    cerr << "Enter bin count: ";
+    cin >> in.bin_count;
 
+    size_t max_count;
+    in.max_count = 0;
+    return in;
 }
-
 int main()
 {
     auto in = input_data();
-    auto bins = make_histogram(in.numbers, in.bin_count);
-    show_histogram_text(bins, in.max_count, in.bin_count);
+    auto bins = make_histogram(in.numbers, in.bin_count, in.number_count, in.max_count);
+    show_histogram_svg(bins, in.max_count, in.bin_count);
+    return 0;
 }
diff --git a/svg.cpp b/svg.cpp
new file mode 100644
index 0000000..058b41f
--- /dev/null
+++ b/svg.cpp
@@ -0,0 +1,49 @@
+#include "svg.h"
+
+void
+svg_begin(double width, double height) {
+    std::cout << "<?xml version='1.0' encoding='UTF-8'?>\n";
+    std::cout << "<svg ";
+    std::cout << "width='" << width << "' ";
+    std::cout << "height='" << height << "' ";
+    std::cout << "viewBox='0 0 " << width << " " << height << "' ";
+    std::cout << "xmlns='http://www.w3.org/2000/svg'>\n";
+}
+
+void
+svg_text(double left, double baseline, std::string text) {
+    std::cout << "<text x='"<< left <<"' y='"<< baseline <<"'>"<< text <<"</text>";
+}
+
+void svg_rect(double x, double y, double width, double height,std::string stroke = "black", std::string fil = "black"){
+    std::cout<< "<rect x='"<< x <<"' y='"<< y <<"' width='"<< width <<"' height='"<< height <<"' />";
+}
+
+void
+show_histogram_svg(std::vector<size_t>& bins, size_t & max_count,size_t & bin_count) {
+
+    const auto IMAGE_WIDTH = 400;
+    const auto IMAGE_HEIGHT = 300;
+    const auto TEXT_LEFT = 20;
+    const auto TEXT_BASELINE = 20;
+    const auto TEXT_WIDTH = 50;
+    const auto BIN_HEIGHT = 30;
+    const auto BLOCK_WIDTH = (IMAGE_WIDTH - TEXT_WIDTH)/max_count;
+
+    svg_begin(IMAGE_WIDTH, IMAGE_HEIGHT);
+
+    double top = 0;
+    for (size_t bin : bins) {
+        const double bin_width = BLOCK_WIDTH * bin;
+        svg_text(TEXT_LEFT, top + TEXT_BASELINE, std::to_string(bin));
+        svg_rect(TEXT_WIDTH, top, bin_width, BIN_HEIGHT);
+        top += BIN_HEIGHT;
+    }
+    svg_end();
+}
+
+void
+svg_end() {
+    std::cout << "</svg>\n";
+}
+
diff --git a/svg.h b/svg.h
new file mode 100644
index 0000000..842eaf7
--- /dev/null
+++ b/svg.h
@@ -0,0 +1,29 @@
+/*#pragma once
+#include <iostream>
+#include <vector>
+
+void
+show_histogram_svg(std::vector<size_t>& bins, size_t & max_count,size_t & bin_count);
+void
+svg_begin(double width, double height);
+void
+svg_text(double left, double baseline, std::string text);
+void
+svg_rect(double x, double y, double width, double height,std::string stroke, std::string fil);
+void
+svg_end();*/
+#pragma once
+#include <iostream>
+#include <vector>
+//#include <string>
+
+void
+show_histogram_svg(std::vector<size_t>& bins, size_t & max_count,size_t & bin_count);
+void
+svg_begin(double width, double height);
+void
+svg_text(double left, double baseline, std::string text);
+void
+svg_rect(double x, double y, double width, double height, double fill_opacity, std::string stroke, std::string fil);
+void
+svg_end();
diff --git a/text.cpp b/text.cpp
new file mode 100644
index 0000000..58c81bc
--- /dev/null
+++ b/text.cpp
@@ -0,0 +1,67 @@
+/*#include "histogram.h"
+
+void
+show_histogram_text(std::vector<size_t>& bins, size_t & max_count,size_t & bin_count){
+    const size_t SCREEN_WIDTH = 80;
+    const size_t MAX_ASTERISK = SCREEN_WIDTH - 3 - 1;
+    if (max_count > MAX_ASTERISK){
+            std::vector<size_t> hights(bin_count);
+            for (size_t i = 0; i < bin_count; i++){
+                size_t height = MAX_ASTERISK * (static_cast<double>(bins[i]) / max_count);
+                hights[i] = height;
+            }
+
+            for (size_t i = 0; i < bin_count; i++){
+                printf("%3d|", bins[i]);
+                for (size_t j = 0; j < hights[i]; j++){
+                    std::cout<<"*";
+                }
+                std::cout << std::endl;
+            }
+    }
+    else{
+        for (size_t i = 0; i < bin_count; i++)
+        {
+            printf("%3d|", bins[i]);
+            for (size_t j = 0; j < bins[i]; j++){
+                std::cout<<"*";
+            }
+            std::cout << std::endl;
+        }
+    }
+
+}
+*/
+#include "histogram.h"
+
+void
+show_histogram_text(std::vector<size_t>& bins, size_t & max_count,size_t & bin_count){
+    const size_t SCREEN_WIDTH = 80;
+    const size_t MAX_ASTERISK = SCREEN_WIDTH - 3 - 1;
+    if (max_count > MAX_ASTERISK){
+            std::vector<size_t> hights(bin_count);
+            for (size_t i = 0; i < bin_count; i++){
+                size_t height = MAX_ASTERISK * (static_cast<double>(bins[i]) / max_count);
+                hights[i] = height;
+            }
+
+            for (size_t i = 0; i < bin_count; i++){
+                printf("%3d|", bins[i]);
+                for (size_t j = 0; j < hights[i]; j++){
+                    std::cout<<"*";
+                }
+                std::cout << std::endl;
+            }
+    }
+    else{
+        for (size_t i = 0; i < bin_count; i++)
+        {
+            printf("%3d|", bins[i]);
+            for (size_t j = 0; j < bins[i]; j++){
+                std::cout<<"*";
+            }
+            std::cout << std::endl;
+        }
+    }
+
+}
diff --git a/text.h b/text.h
new file mode 100644
index 0000000..2a4e40e
--- /dev/null
+++ b/text.h
@@ -0,0 +1,12 @@
+/*#pragma once
+#include <iostream>
+#include <vector>
+
+void
+show_histogram_text(std::vector<size_t>& bins, size_t & max_count,size_t & bin_count);*/
+#pragma once
+#include <iostream>
+#include <vector>
+
+void
+show_histogram_text(std::vector<size_t>& bins, size_t & max_count,size_t & bin_count);