diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..9fa1ef9
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,5 @@
+lab34.vcxproj
+lab34.vcxproj.filters
+lab34.vcxproj.user
+/x64
+.vs/
\ No newline at end of file
diff --git a/histogram.cpp b/histogram.cpp
index cbcd156..4720614 100644
--- a/histogram.cpp
+++ b/histogram.cpp
@@ -3,8 +3,11 @@
 #include "histogram_internal.h"
 using namespace std;
 
-void
+bool
 find_minmax(const vector<double>& numbers, double& min, double& max) {
+	if (numbers.size() == 0) {
+		return false;
+	}
 	min = numbers[0];
 	max = numbers[0];
 	for (auto x : numbers) {
@@ -13,6 +16,7 @@ find_minmax(const vector<double>& numbers, double& min, double& max) {
 		if (x < min)
 			min = x;
 	}
+	return true;
 }
 
 vector<size_t>
diff --git a/histogram.h b/histogram.h
index a86c9a3..d9585f9 100644
--- a/histogram.h
+++ b/histogram.h
@@ -3,3 +3,7 @@
 
 std::vector<size_t>
 make_histogram(const std::vector<double>& numbers, size_t bin_count);
+bool
+find_minmax(const std::vector<double>& numbers, double& min, double& max);
+
+
diff --git a/histogram_internal.h b/histogram_internal.h
index 357be1f..ff6e9ca 100644
--- a/histogram_internal.h
+++ b/histogram_internal.h
@@ -1,6 +1,6 @@
 #pragma once
 #include <vector>
 
-void
+bool
 find_minmax(const std::vector<double>& numbers, double& min, double& max);
 
diff --git a/main.cpp b/main.cpp
index 43cb6df..29a0767 100644
--- a/main.cpp
+++ b/main.cpp
@@ -5,6 +5,7 @@
 #include "text.h"
 #include "svg.h"
 
+
 using namespace std;
 
 
@@ -32,18 +33,6 @@ input_data() {
 	return in;
 }
 
-void
-find_minmax(const vector<double>& numbers, double& min, double& max);
-
-vector<size_t>
-make_histogram(const vector<double>& numbers, size_t bin_count);
-
-void
-show_histogram_text(vector<size_t> bins);
-
-void
-show_histogram_svg(const vector<size_t>& bins);
-
 int main() {
 	Input in = input_data();
 	auto bins = make_histogram(in.numbers, in.bin_count);
diff --git a/svg.cpp b/svg.cpp
index 22a61ce..86fa3ce 100644
--- a/svg.cpp
+++ b/svg.cpp
@@ -52,10 +52,10 @@ show_histogram_svg(const vector<size_t>& bins) {
 
     if (k > 1) k = 1;
     for (size_t bin : bins) {
-        const double bin_width = BLOCK_WIDTH * bin * k;
-        svg_text(TEXT_LEFT + top, TEXT_BASELINE, to_string(bin));
-        svg_rect(top + 13, 3 * BLOCK_WIDTH, BIN_HEIGHT, bin_width, "black", "#87CEEB");
+        const double bin_width = BLOCK_WIDTH * bin;
+        svg_text(TEXT_LEFT, top + TEXT_BASELINE, to_string(bin));
+        svg_rect(TEXT_WIDTH, top, bin_width, BIN_HEIGHT, "black", "#87CEEB");
         top += BIN_HEIGHT;
     }
     svg_end();
-}
+}
\ No newline at end of file