diff --git a/main.cpp b/main.cpp
index 4da4a38..d589495 100644
--- a/main.cpp
+++ b/main.cpp
@@ -9,6 +9,21 @@ struct Input {
     size_t number_count;
 };
 
+void
+find_minmax(vector<double> numbers, double& min, double& max, size_t number_count) {
+    min = numbers[0];
+    max = numbers[0];
+    for (size_t i = 1; i < number_count; i++ ){
+        if(numbers[i] < min){
+            min = numbers[i];
+        }
+        else if (numbers[i] > max){
+            max = numbers[i];
+        }
+    }
+}
+
+
 Input input_data() {
     Input in;
     cin >> in.number_count;
@@ -27,19 +42,9 @@ int main(){
     const size_t MAX_ASTERISK = SCREEN_WIDTH - 3 - 1;
 
     Input in = input_data();
-    size_t number_count;
-    cin >> number_count;
 
     double minc, maxc;
-    minc = maxc = in.numbers[0];
-    for (size_t i = 1; i < number_count; i++ ){
-        if(in.numbers[i] < minc){
-            minc = in.numbers[i];
-        }
-        else if (in.numbers[i] > maxc){
-            maxc = in.numbers[i];
-        }
-    }
+    find_minmax(in.numbers, minc, maxc, in.number_count);
 
     vector<size_t> bins(in.bin_count);
     double bin_size = (maxc - minc) / in.bin_count;