diff --git a/sem2/EliseySin/mini DZ/1/MathLibrary/MathLibrary.h b/sem2/EliseySin/mini DZ/1/MathLibrary/MathLibrary.h
index 2faae949..5f84f326 100644
--- a/sem2/EliseySin/mini DZ/1/MathLibrary/MathLibrary.h	
+++ b/sem2/EliseySin/mini DZ/1/MathLibrary/MathLibrary.h	
@@ -1,22 +1,14 @@
-#ifndef MATHLIBRARY_H
-#define MATHLIBRARY_H
+#pragma once
 
 #ifdef MATHLIBRARY_EXPORTS
-#define MATH_API __declspec(dllexport)
+#define MATHLIBRARY_API __declspec(dllexport)
 #else
-#define MATH_API __declspec(dllimport)
+#define MATHLIBRARY_API __declspec(dllimport)
 #endif
 
-#include <vector>
-#include <algorithm>
-#include <cmath>
-#include <numeric>
-
 extern "C" {
-    MATH_API double mean(const std::vector<double>& data);
-    MATH_API double median(std::vector<double> data);
-    MATH_API double rootMeanSquare(const std::vector<double>& data);
-    MATH_API double variance(const std::vector<double>& data);
+    MATHLIBRARY_API double mean(const double* data, int size);
+    MATHLIBRARY_API double median(const double* data, int size);
+    MATHLIBRARY_API double rootMeanSquare(const double* data, int size);
+    MATHLIBRARY_API double variance(const double* data, int size);
 }
-
-#endif