diff --git a/doctest.h b/doctest.h
new file mode 100644
index 0000000..03aa0c5
--- /dev/null
+++ b/doctest.h
@@ -0,0 +1,44 @@
+#include <iostream>
+#include <vector>
+#include "text.h"
+
+using namespace std;
+
+void show_histogram_text(vector<size_t> bins, size_t bin_count){
+    const size_t SCREEN_WIDTH = 80;
+    const size_t MAX_ASTERISK = SCREEN_WIDTH - 3 - 1;
+
+    size_t max_bin = bins[0];
+    for(size_t i = 0; i < bin_count; i++)
+    {
+        if(bins[i] > max_bin)
+        {
+            max_bin = bins[i];
+        }
+    }
+
+    for (size_t bin: bins)
+    {
+        size_t height = bin;
+
+        if (max_bin > MAX_ASTERISK)
+        {
+          height = MAX_ASTERISK * (static_cast<double>(bin) / max_bin);
+        }
+
+        if (bin < 100)
+        {
+            cout << ' ';
+        }
+        if (bin < 10)
+        {
+            cout << ' ';
+        }
+        cout << bin << "|";
+        for(size_t i = 0; i < height; i++)
+        {
+            cout << "*";
+        }
+        cout << endl;
+    }
+}
diff --git a/histogram.h b/histogram.h
new file mode 100644
index 0000000..6febae0
--- /dev/null
+++ b/histogram.h
@@ -0,0 +1,4 @@
+#include <vector>
+#include <iostream>
+using namespace std;
+vector<size_t> make_histogram(size_t number, vector<double> vec);
diff --git a/main.cpp b/main.cpp
index b4392ec..e108c01 100644
--- a/main.cpp
+++ b/main.cpp
@@ -1,9 +1,25 @@
-#include <iostream>
+#include "histogram.h"
+#include "text.h"
+#include "svg.h"
+struct Input {
+    vector<double> vec;
+    size_t korz{};
+};
+Input input_data() {
+    Input in;
+    size_t n, korz;
 
-using namespace std;
-
-int main()
-{
-    cout << "Hello world!" << endl;
-    return 0;
+    cerr << "Number of elem ";
+    cin >> n;
+    in.vec.resize(n);
+    for (size_t i = 0; i < n; i++)
+        cin >> in.vec[i];
+    cerr << "Enter bin count: ";
+    cin >> in.korz;
+    return in;
+}
+int main() {
+    auto in = input_data();
+    auto bins = make_histogram(in.korz, in.vec);
+    show_histogram_svg(bins);
 }
diff --git a/text.h b/text.h
new file mode 100644
index 0000000..ab14ac3
--- /dev/null
+++ b/text.h
@@ -0,0 +1,3 @@
+#include <iostream>
+#include <vector>
+void show_histogram_text(std::vector<size_t> bins);