diff --git a/main.cpp b/main.cpp
index 96ea819..2dcec9b 100644
--- a/main.cpp
+++ b/main.cpp
@@ -11,22 +11,36 @@ struct Input
     size_t bin_count{};
 };
 
-Input input_data(istream& sin)
+Input input_data(istream& sin, bool prompt)
 {
-    Input in;
-    size_t number_count;
-    sin >> number_count;
-    in.numbers.resize(number_count);
-    for (size_t i = 0; i < number_count; i++)
-    {
-        sin >> in.numbers[i];
+    if (prompt){
+        Input in;
+        size_t number_count;
+        sin >> number_count;
+        in.numbers.resize(number_count);
+        for (size_t i = 0; i < number_count; i++)
+        {
+            sin >> in.numbers[i];
+        }
+        sin >> in.bin_count;
+        return in;
+    }
+    else{
+        Input in;
+        size_t number_count;
+        sin >> number_count;
+        in.numbers.resize(number_count);
+        for (size_t i = 0; i < number_count; i++)
+        {
+            sin >> in.numbers[i];
+        }
+        sin >> in.bin_count;
+        return in;
     }
-    sin >> in.bin_count;
-    return in;
 }
 
 int main() {
-    Input in = input_data(cin);
+    Input in = input_data(cin, false);
     auto bins = make_histogram(in.numbers, in.bin_count);
     show_histogram_svg(bins);
     return 0;