diff --git a/main.cpp b/main.cpp
index 9427aac..60e4f9a 100644
--- a/main.cpp
+++ b/main.cpp
@@ -20,19 +20,19 @@ Input input_data(istream& in, bool prompt) {
     if (prompt){
         cerr << "Enter number count: ";
     }
-    cin >> number_count;
+    in >> number_count;
     inp.numbers.resize(number_count);
     if (prompt){
                 cerr << "Enter numbers: ";
         }
     for (size_t i = 0; i < number_count; i++) {
-        cin >> inp.numbers[i];
+        in >> inp.numbers[i];
     }
 
     if (prompt) {
             cerr << "Enter bin count: ";
     }
-    cin >> inp.bin_count;
+    in >> inp.bin_count;
     return inp;
 }
 
@@ -74,8 +74,7 @@ int main(int argc, char* argv[]) {
         input = input_data(cin, true);
     }
 
-    auto in = input_data(cin, true);
-    auto bins = make_histogram(in.numbers, in.bin_count);
+    auto bins = make_histogram(input.numbers, input.bin_count);
     show_histogram_svg(bins);
     return 0;
 }