diff --git a/main.cpp b/main.cpp
index 94b6370..8f6dd2f 100644
--- a/main.cpp
+++ b/main.cpp
@@ -10,13 +10,17 @@ struct Input {
 };
 
 Input
-input_data(istream& in){
+input_data(istream& in, bool prompt){
     size_t number_count;
     in >> number_count;
 
     Input inp;
     inp.numbers.resize(number_count);
 
+    if (prompt){
+        std::cerr << "enter bin_count";
+    }
+
     for (size_t i = 0; i < number_count; i++){
         in >> inp.numbers[i];
     }
@@ -27,7 +31,7 @@ input_data(istream& in){
 }
 
 int main(){
-    auto in = input_data(cin);
+    auto in = input_data(cin, true);
     auto bins = make_histogram(in.numbers, in.bin_count);
     auto borders = make_borders(in.numbers, in.bin_count);
     show_histogram_svg(bins, borders, in.bin_count);