diff --git a/main.cpp b/main.cpp
index 0f991b3..ab3376a 100644
--- a/main.cpp
+++ b/main.cpp
@@ -3,57 +3,86 @@
 
 using namespace std;
 
-int main()
-{
-    size_t bin_count, numbers_count;
-    const size_t SCREEN_WIDTH = 80;
-    const size_t MAX_ASTERISK = SCREEN_WIDTH - 3 - 1;
+const size_t SCREEN_WIDTH = 80;
+const size_t MAX_ASTERISK = SCREEN_WIDTH - 3 - 1;
+
+struct Input {
+    vector<double> numbers;
+    size_t bin_count{};
+};
 
+Input input_data()
+{
+    size_t number_count;
     cerr << "Enter number count:";
-    cin >> numbers_count;
+    cin >> number_count;
 
-    vector<double> numbers ( numbers_count );
-    for (size_t i=0; i < numbers_count; i++){
-        cin >> numbers[i];
-    }
-    cin >> bin_count;
+Input in;
 
-    vector<size_t> bins ( bin_count );
-    double minx = numbers[0];
-    double maxx = numbers[0];
+    in.numbers.resize(number_count);
+    cerr << "Enter numbers: ";
+    for(size_t i = 0; i < number_count; i++)
+        cin >> in.numbers[i];
+
+    cerr << "Enter number of bins: ";
+    cin >> in.bin_count;
+
+    return in;
+
+}
 
+void find_minmax(vector<double>& numbers, double& min, double& max) {
+    min = numbers[0];
+    max = numbers[0];
+    // (здесь код поиска минимума и максимума)
     for (double x : numbers){
-        if (x < minx){
-            minx = x;
-        } else if (x > maxx){
-            maxx = x;
+        if (x < min){
+            min = x;
+        } else if (x > max){
+            max = x;
         }
     }
+}
+
+vector<size_t> make_histogram(vector<double> &numbers, size_t bin_count) {
+    double min = numbers[0];
+    double max = numbers[0];
+    find_minmax(numbers, min, max);
 
-    double bin_size = (maxx - minx) / bin_count;
-    for (size_t i=0; i < numbers_count; i++ ){
+    double bin_size = (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 = minx + j * bin_size;
-            auto hi = minx + ( j + 1 ) * bin_size;
-            if (lo <= numbers[i] && ( numbers[i] < hi )){
+        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 ){
+        if (!found){
             bins[bin_count-1]++;
         }
     }
+    return bins;
+}
+
+int main()
+{
+    Input in = input_data();
+    auto bins = make_histogram(in.numbers, in.bin_count);
 
     size_t maxbin = bins[0];
-    for (size_t i=1; i < bin_count; i++){
+    for (size_t i=1; i < in.bin_count; i++){
         if (maxbin < bins[i]){
             maxbin = bins[i];
         }
     }
     if (maxbin <= MAX_ASTERISK){
-        for (size_t i=0; i < bin_count; i++){
+        for (size_t i=0; i < in.bin_count; i++){
             if ((bins[i] < 1000)&&(bins[i] > 99)){
                 cout << bins[i] << "|";
                 for ( size_t j=0; j < bins[i]; j++ ){
@@ -77,7 +106,7 @@ int main()
             }
         }
     } else {
-        for (size_t i=0; i < bin_count; i++){
+        for (size_t i=0; i < in.bin_count; i++){
             size_t heightG= MAX_ASTERISK * (static_cast<double>(bins[i]) / maxbin);
 
             if ((bins[i] < 1000)&&(bins[i] > 99)){