diff --git a/fileHandler.h b/fileHandler.h
index e4874cd..78c5317 100644
--- a/fileHandler.h
+++ b/fileHandler.h
@@ -5,27 +5,27 @@
 #include <fstream>
 #include <vector>
 
-std::vector<size_t> readFromFile(const char* filePath)
+std::vector<uint32_t > readFromFile(const char* filePath)
 {
-    std::vector<size_t> numbers;
+    std::vector<uint32_t > numbers;
     std::cout << "read file: " << filePath << "..." << std::endl;
     std::ifstream in(filePath);
     if (in.is_open())
     {
         std::string line;
         std::getline(in, line);
-        size_t count = std::stoi(line);
+        int count = std::stoi(line);
 
         std::cout << "total: " << count << " elems" << std::endl;
 
-        size_t idx = 0;
+        int idx = 0;
         while (in.good() && idx < count) {
             std::getline(in, line);
             //long val = std::stol(line);
             //std::cout << "as long: " << val << std::endl;
             unsigned long ulval = std::stoul(line);
             //std::cout << "as unsigned long: " << ulval << std::endl;
-            numbers.push_back((size_t)ulval); // auto cast to uint
+            numbers.push_back((uint32_t)ulval); // auto cast to uint
             idx++;
         }
     }