diff --git a/l03.cpp b/l03.cpp
index f7119d3..7569933 100644
--- a/l03.cpp
+++ b/l03.cpp
@@ -7,14 +7,15 @@
 
 using namespace std;
 
-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{};
     size_t IMAGE_WIDTH{};
+    bool valid;
     
 };
 
@@ -28,13 +29,19 @@ Input input_data()
 
     Input in;
 
-    cerr << " Input width of image, >70 but not >800 : ";
+    
+    cerr << " Input width of image, > 70 but not >800 : ";
     cin >> in.IMAGE_WIDTH;
+    if(in.IMAGE_WIDTH < 70 || in.IMAGE_WIDTH > 800 ) {
+        while(in.IMAGE_WIDTH < 70 || in.IMAGE_WIDTH > 800) {
+            cerr << " Input width of image, >70 but not >800 : ";
+            cin >> in.IMAGE_WIDTH;
+        }
+    }
 
     //size_t number_count = in.number_counts;
 
-    in.numbers.resize(number_count);
-
+    in.numbers.resize( number_count );
     cerr << "Enter numbers: ";
     // vector<double> numbers(number_count);
 
@@ -53,11 +60,11 @@ int main()
 {   
     
     auto in = input_data();
-    auto bins = make_histogram(in.numbers, in.bin_count);
+    auto bins = make_histogram( in.numbers, in.bin_count );
     //int chek_block_width(in.IMAGE_WIDTH);
     //chek_block_width(in.IMAGE_WIDTH, in.number_count);
     //if (chek_block_width==1) 
-    show_histogram_svg(bins,in.IMAGE_WIDTH);
+    show_histogram_svg( bins,in.IMAGE_WIDTH );
     //if(chek_block_width==0) return 0;
     //show_histogram_svg(bins);