diff --git a/course03/homework00/balint_hw/main.cpp b/course03/homework00/balint_hw/main.cpp
index d42f15c..99c8c53 100644
--- a/course03/homework00/balint_hw/main.cpp
+++ b/course03/homework00/balint_hw/main.cpp
@@ -1,123 +1,131 @@
 #include <iostream>
 
-class Date
-{
-	private: int y,m,d;
+class Date {
+private:
+  int y, m, d;
 
-			 bool yearvalid() const
-			 {
-				 return y>=1600 && y<=2500;
-			 }
+  bool yearvalid() const { return y >= 1600 && y <= 2500; }
 
-			 bool monthvalid() const {
-				 return m >= 1 && m <= 12;
-			 }
-			 static bool isleapyear(int y) {
-				 if (y %4 != 0){return false;}
-				 if (y %100 !=0) {return true;}
-				 if (y%400 !=0) {return false;}
-				 return true;
-			 }
-			 int maxDayInMonth(int y, int m) const{
-				switch(m)
-				{
-				case 1:
-				case 3:
-				case 5:
-				case 7:
-				case 8:
-				case 10:
-				case 12:
-					return 31;
-				case 4:
-				case 6:
-				case 9:
-				case 11:
-					return 30;
-				case 2:
-					return isleapyear(y) ? 29 : 28;
-				default:
-					throw std::runtime_error("Invalid month value");
-				};
-			 }
-			 int dayDiff(Date first, Date second) const {
-				 if (first==second){return 0;}
-				 if (!(first<second)){return -1 *dayDiff(second, first);}
+  bool monthvalid() const { return m >= 1 && m <= 12; }
+  static bool isleapyear(int y) {
+    if (y % 4 != 0) {
+      return false;
+    }
+    if (y % 100 != 0) {
+      return true;
+    }
+    if (y % 400 != 0) {
+      return false;
+    }
+    return true;
+  }
+  int maxDayInMonth(int y, int m) const {
+    switch (m) {
+    case 1:
+    case 3:
+    case 5:
+    case 7:
+    case 8:
+    case 10:
+    case 12:
+      return 31;
+    case 4:
+    case 6:
+    case 9:
+    case 11:
+      return 30;
+    case 2:
+      return isleapyear(y) ? 29 : 28;
+    default:
+      throw std::runtime_error("Invalid month value");
+    };
+  }
+  int dayDiff(Date first, Date second) const {
+    if (first == second) {
+      return 0;
+    }
+    if (!(first < second)) {
+      return -1 * dayDiff(second, first);
+    }
 
-				 Date dayCnt = first.nextDay();
-				 int cnt = 1;
-				while (dayCnt<second ){
-					cnt++;
-					dayCnt = dayCnt.nextDay();
-				}
-				return cnt;
-			 }
-	public:
-		Date (int y, int m, int d): y(y), m(m), d(d)
-	{
-	};
-		Date nextDay() const {
-			Date firstguess = {y,m,d+1};
-			if (!firstguess.isValid())
-			{
-				firstguess = {y,m+1,1};
-				if (!firstguess.isValid())
-				{
-					firstguess = {y+1,1,1};
-				}
-			}
-			return firstguess;
-		}
-		bool isValid() const{
-			if (!yearvalid() || !monthvalid()) {return false;}
-			if (d<1 || d>maxDayInMonth(y,m)) {return false;}
-			return true;
-		}
-		int getY() const {return y;}
-		int getM() const {return m;}
-		int getD() const {return d;}
+    Date dayCnt = first.nextDay();
+    int cnt = 1;
+    while (dayCnt < second) {
+      cnt++;
+      dayCnt = dayCnt.nextDay();
+    }
+    return cnt;
+  }
 
-		bool operator==(const Date& other) const {
-			return std::tie(y, m, d) == std::tie(other.y, other.m, other.d);
-		}
-		bool operator<(const Date& other) const
-		{
-			return std::tie(y, m, d) < std::tie(other.y, other.m, other.d);
-		}
-		int daysSinceEpoch() const {
-			return dayDiff({1970, 1, 1}, *this);
-		}
+public:
+  Date(int y, int m, int d) : y(y), m(m), d(d){};
+  Date nextDay() const {
+    Date firstguess = {y, m, d + 1};
+    if (!firstguess.isValid()) {
+      firstguess = {y, m + 1, 1};
+      if (!firstguess.isValid()) {
+        firstguess = {y + 1, 1, 1};
+      }
+    }
+    return firstguess;
+  }
+  bool isValid() const {
+    if (!yearvalid() || !monthvalid()) {
+      return false;
+    }
+    if (d < 1 || d > maxDayInMonth(y, m)) {
+      return false;
+    }
+    return true;
+  }
+  int getY() const { return y; }
+  int getM() const { return m; }
+  int getD() const { return d; }
 
-		std::string dayOfWeek() const {
-			if (!isValid()){
-				throw std::runtime_error("dayOfWeek() called while !isValid()");
-			}
-			int offset = (((daysSinceEpoch() %7) +7) %7);
-			switch(offset)
-			{
-			case 0: return "Thursday";
-			case 1: return "Friday";
-			case 2: return "Saturday";
-			case 3: return "Sunday";
-			case 4: return "Monday";
-			case 5: return "Tuesday";
-			case 6: return "Wednesday";
-			default:
-				throw std::logic_error("Shouldn't happen");
-			}
-		}
+  bool operator==(const Date &other) const {
+    return std::tie(y, m, d) == std::tie(other.y, other.m, other.d);
+  }
+  bool operator<(const Date &other) const {
+    return std::tie(y, m, d) < std::tie(other.y, other.m, other.d);
+  }
+  int daysSinceEpoch() const { return dayDiff({1970, 1, 1}, *this); }
+
+  std::string dayOfWeek() const {
+    if (!isValid()) {
+      throw std::runtime_error("dayOfWeek() called while !isValid()");
+    }
+    int offset = (((daysSinceEpoch() % 7) + 7) % 7);
+    switch (offset) {
+    case 0:
+      return "Thursday";
+    case 1:
+      return "Friday";
+    case 2:
+      return "Saturday";
+    case 3:
+      return "Sunday";
+    case 4:
+      return "Monday";
+    case 5:
+      return "Tuesday";
+    case 6:
+      return "Wednesday";
+    default:
+      throw std::logic_error("Shouldn't happen");
+    }
+  }
 };
-std::ostream& operator<<(std::ostream &strm, const Date &a) {
-	  return strm << a.getY()<<"-"<<a.getM()<<"-"<<a.getD();
+std::ostream &operator<<(std::ostream &strm, const Date &a) {
+  return strm << a.getY() << "-" << a.getM() << "-" << a.getD();
 }
 
-int main()
-{
+int main() {
 
-	Date test2 = {2019,5,5};
+  Date test2 = {2019, 5, 5};
 
-	std::cout<< "Nr of days since epoch is: "<<test2.daysSinceEpoch()<<std::endl;
-	std::cout<<"Day of week is : "<<test2.dayOfWeek()<<std::endl;
+  std::cout << "Nr of days since epoch is: " << test2.daysSinceEpoch()
+            << std::endl;
+  std::cout << "Day of week is : " << test2.dayOfWeek() << std::endl;
 
-	return 0;
+  return 0;
 }