Moved my classes to an appropriate namespace

BigInt.hpp

@@ -10,7 +10,7 @@
 #include <string>
 #include <cmath>
 
-
+namespace mee{
 class BigInt{
 private:
 	std::vector<int64_t> num;
@@ -139,3 +139,4 @@ public:
 		return number;
 	}
 };
+}

Stopwatch.hpp

@@ -9,7 +9,7 @@
 
 #include <chrono>
 
-
+namespace mee{
 class Stopwatch{
 private:
 	std::chrono::high_resolution_clock::time_point startTime;
@@ -80,5 +80,6 @@ public:
 		endTime = startTime = std::chrono::high_resolution_clock::time_point();
 	}
 };
+}
 
 #endif //end STOPWATCH_HPP