import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.util.StringTokenizer;

public class Main {

	public static void main(String[] args) {
		InputStream inputStream = System.in;
		OutputStream outputStream = System.out;
		InputReader in = new InputReader(inputStream);
		PrintWriter out = new PrintWriter(outputStream);
		Task solver = new Task();
		solver.solve(1, in, out);
		out.close();

	}
	static class Task{
		int M = (int) (1e9 + 7);
		public void solve(int testNumber, InputReader in, PrintWriter out) {
			
				int w = in.nextInt(), h = in.nextInt(), x = in.nextInt(), y = in.nextInt();
				int f = ((x*2==w && y*2 == h)?1:0);
				out.print(String.format("%.9f %d",(double)w*h/2.0,f));
				
				
					
						
		
				
		}//Solve
		
	}//task
	
	
	static class InputReader{
		public BufferedReader reader;
		public StringTokenizer tokenizer;
		public InputReader(InputStream stream) {
			reader = new BufferedReader(new InputStreamReader(stream), 32768);
			tokenizer = null;
		}
		public String next() {
			while(tokenizer == null || ! tokenizer.hasMoreTokens()) {
				try {
					tokenizer = new StringTokenizer(reader.readLine());
				} catch (IOException e) {
					throw new RuntimeException(e);
				}
			}
			return tokenizer.nextToken();
		}
		public int nextInt() {
			return Integer.parseInt(next());
		}
		public int[] nextIntArray(int n) {
			int[] arr = new int[n];
			for(int i = -1; ++i < n;) arr[i] = Integer.parseInt(next());
			return arr;
		}
		public long nextLong() {
			return Long.parseLong(next());
		}
		public float nextFloat() {
			return Float.parseFloat(next());
		}
	}
} import java.io.BufferedReader; BufferedReader java.io import java.io.IOException; IOException java.io import java.io.InputStream; InputStream java.io import java.io.InputStreamReader; InputStreamReader java.io import java.io.OutputStream; OutputStream java.io import java.io.PrintWriter; PrintWriter java.io import java.util.StringTokenizer; StringTokenizer java.util public class Main {

	public static void main(String[] args) {
		InputStream inputStream = System.in;
		OutputStream outputStream = System.out;
		InputReader in = new InputReader(inputStream);
		PrintWriter out = new PrintWriter(outputStream);
		Task solver = new Task();
		solver.solve(1, in, out);
		out.close();

	}
	static class Task{
		int M = (int) (1e9 + 7);
		public void solve(int testNumber, InputReader in, PrintWriter out) {
			
				int w = in.nextInt(), h = in.nextInt(), x = in.nextInt(), y = in.nextInt();
				int f = ((x*2==w && y*2 == h)?1:0);
				out.print(String.format("%.9f %d",(double)w*h/2.0,f));
				
				
					
						
		
				
		}//Solve
		
	}//task
	
	
	static class InputReader{
		public BufferedReader reader;
		public StringTokenizer tokenizer;
		public InputReader(InputStream stream) {
			reader = new BufferedReader(new InputStreamReader(stream), 32768);
			tokenizer = null;
		}
		public String next() {
			while(tokenizer == null || ! tokenizer.hasMoreTokens()) {
				try {
					tokenizer = new StringTokenizer(reader.readLine());
				} catch (IOException e) {
					throw new RuntimeException(e);
				}
			}
			return tokenizer.nextToken();
		}
		public int nextInt() {
			return Integer.parseInt(next());
		}
		public int[] nextIntArray(int n) {
			int[] arr = new int[n];
			for(int i = -1; ++i < n;) arr[i] = Integer.parseInt(next());
			return arr;
		}
		public long nextLong() {
			return Long.parseLong(next());
		}
		public float nextFloat() {
			return Float.parseFloat(next());
		}
	}
} Main public static void main(String[] args) {
		InputStream inputStream = System.in;
		OutputStream outputStream = System.out;
		InputReader in = new InputReader(inputStream);
		PrintWriter out = new PrintWriter(outputStream);
		Task solver = new Task();
		solver.solve(1, in, out);
		out.close();

	} main {
		InputStream inputStream = System.in;
		OutputStream outputStream = System.out;
		InputReader in = new InputReader(inputStream);
		PrintWriter out = new PrintWriter(outputStream);
		Task solver = new Task();
		solver.solve(1, in, out);
		out.close();

	} InputStream inputStream = System.in; inputStream System.in System System.in OutputStream outputStream = System.out; outputStream System.out System System.out InputReader in = new InputReader(inputStream); in new InputReader(inputStream) PrintWriter out = new PrintWriter(outputStream); out new PrintWriter(outputStream) Task solver = new Task(); solver new Task() solver.solve(1, in, out) solver.solve solver 1 in out out.close() out.close out String[] args args static class Task{
		int M = (int) (1e9 + 7);
		public void solve(int testNumber, InputReader in, PrintWriter out) {
			
				int w = in.nextInt(), h = in.nextInt(), x = in.nextInt(), y = in.nextInt();
				int f = ((x*2==w && y*2 == h)?1:0);
				out.print(String.format("%.9f %d",(double)w*h/2.0,f));
				
				
					
						
		
				
		}//Solve
		
	}//task Task int M = (int) (1e9 + 7); M (int) (1e9 + 7) 1e9 7 public void solve(int testNumber, InputReader in, PrintWriter out) {
			
				int w = in.nextInt(), h = in.nextInt(), x = in.nextInt(), y = in.nextInt();
				int f = ((x*2==w && y*2 == h)?1:0);
				out.print(String.format("%.9f %d",(double)w*h/2.0,f));
				
				
					
						
		
				
		}//Solve solve {
			
				int w = in.nextInt(), h = in.nextInt(), x = in.nextInt(), y = in.nextInt();
				int f = ((x*2==w && y*2 == h)?1:0);
				out.print(String.format("%.9f %d",(double)w*h/2.0,f));
				
				
					
						
		
				
		} int w = in.nextInt() w in.nextInt() in.nextInt in h = in.nextInt() h in.nextInt() in.nextInt in x = in.nextInt() x in.nextInt() in.nextInt in y = in.nextInt(); y in.nextInt() in.nextInt in int f = ((x*2==w && y*2 == h)?1:0); f ((x*2==w && y*2 == h)?1:0) (x*2==w && y*2 == h) x*2==w x*2 x 2 w y*2 == h y*2 y 2 h 1 0 out.print(String.format("%.9f %d",(double)w*h/2.0,f)) out.print out String.format("%.9f %d",(double)w*h/2.0,f) String.format String "%.9f %d" (double)w*h/2.0 (double)w*h (double)w h 2.0 f int testNumber testNumber InputReader in in PrintWriter out out static class InputReader{
		public BufferedReader reader;
		public StringTokenizer tokenizer;
		public InputReader(InputStream stream) {
			reader = new BufferedReader(new InputStreamReader(stream), 32768);
			tokenizer = null;
		}
		public String next() {
			while(tokenizer == null || ! tokenizer.hasMoreTokens()) {
				try {
					tokenizer = new StringTokenizer(reader.readLine());
				} catch (IOException e) {
					throw new RuntimeException(e);
				}
			}
			return tokenizer.nextToken();
		}
		public int nextInt() {
			return Integer.parseInt(next());
		}
		public int[] nextIntArray(int n) {
			int[] arr = new int[n];
			for(int i = -1; ++i < n;) arr[i] = Integer.parseInt(next());
			return arr;
		}
		public long nextLong() {
			return Long.parseLong(next());
		}
		public float nextFloat() {
			return Float.parseFloat(next());
		}
	} InputReader public BufferedReader reader; reader public StringTokenizer tokenizer; tokenizer public InputReader(InputStream stream) {
			reader = new BufferedReader(new InputStreamReader(stream), 32768);
			tokenizer = null;
		} InputReader {
			reader = new BufferedReader(new InputStreamReader(stream), 32768);
			tokenizer = null;
		} reader = new BufferedReader(new InputStreamReader(stream), 32768) reader new BufferedReader(new InputStreamReader(stream), 32768) tokenizer = null tokenizer null InputStream stream stream public String next() {
			while(tokenizer == null || ! tokenizer.hasMoreTokens()) {
				try {
					tokenizer = new StringTokenizer(reader.readLine());
				} catch (IOException e) {
					throw new RuntimeException(e);
				}
			}
			return tokenizer.nextToken();
		} next {
			while(tokenizer == null || ! tokenizer.hasMoreTokens()) {
				try {
					tokenizer = new StringTokenizer(reader.readLine());
				} catch (IOException e) {
					throw new RuntimeException(e);
				}
			}
			return tokenizer.nextToken();
		} while(tokenizer == null || ! tokenizer.hasMoreTokens()) {
				try {
					tokenizer = new StringTokenizer(reader.readLine());
				} catch (IOException e) {
					throw new RuntimeException(e);
				}
			} tokenizer == null || ! tokenizer.hasMoreTokens() tokenizer == null tokenizer null ! tokenizer.hasMoreTokens() tokenizer.hasMoreTokens() tokenizer.hasMoreTokens tokenizer {
				try {
					tokenizer = new StringTokenizer(reader.readLine());
				} catch (IOException e) {
					throw new RuntimeException(e);
				}
			} try {
					tokenizer = new StringTokenizer(reader.readLine());
				} catch (IOException e) {
					throw new RuntimeException(e);
				} catch (IOException e) {
					throw new RuntimeException(e);
				} IOException e {
					throw new RuntimeException(e);
				} throw new RuntimeException(e); new RuntimeException(e) {
					tokenizer = new StringTokenizer(reader.readLine());
				} tokenizer = new StringTokenizer(reader.readLine()) tokenizer new StringTokenizer(reader.readLine()) return tokenizer.nextToken(); tokenizer.nextToken() tokenizer.nextToken tokenizer public int nextInt() {
			return Integer.parseInt(next());
		} nextInt {
			return Integer.parseInt(next());
		} return Integer.parseInt(next()); Integer.parseInt(next()) Integer.parseInt Integer next() next public int[] nextIntArray(int n) {
			int[] arr = new int[n];
			for(int i = -1; ++i < n;) arr[i] = Integer.parseInt(next());
			return arr;
		} nextIntArray {
			int[] arr = new int[n];
			for(int i = -1; ++i < n;) arr[i] = Integer.parseInt(next());
			return arr;
		} int[] arr = new int[n]; arr new int[n] n for(int i = -1; ++i < n;) arr[i] = Integer.parseInt(next()); int i = -1; int i = -1; i -1 1 ++i < n ++i i n arr[i] = Integer.parseInt(next()); arr[i] = Integer.parseInt(next()) arr[i] arr i Integer.parseInt(next()) Integer.parseInt Integer next() next return arr; arr int n n public long nextLong() {
			return Long.parseLong(next());
		} nextLong {
			return Long.parseLong(next());
		} return Long.parseLong(next()); Long.parseLong(next()) Long.parseLong Long next() next public float nextFloat() {
			return Float.parseFloat(next());
		} nextFloat {
			return Float.parseFloat(next());
		} return Float.parseFloat(next()); Float.parseFloat(next()) Float.parseFloat Float next() next public class Main {

	public static void main(String[] args) {
		InputStream inputStream = System.in;
		OutputStream outputStream = System.out;
		InputReader in = new InputReader(inputStream);
		PrintWriter out = new PrintWriter(outputStream);
		Task solver = new Task();
		solver.solve(1, in, out);
		out.close();

	}
	static class Task{
		int M = (int) (1e9 + 7);
		public void solve(int testNumber, InputReader in, PrintWriter out) {
			
				int w = in.nextInt(), h = in.nextInt(), x = in.nextInt(), y = in.nextInt();
				int f = ((x*2==w && y*2 == h)?1:0);
				out.print(String.format("%.9f %d",(double)w*h/2.0,f));
				
				
					
						
		
				
		}//Solve
		
	}//task
	
	
	static class InputReader{
		public BufferedReader reader;
		public StringTokenizer tokenizer;
		public InputReader(InputStream stream) {
			reader = new BufferedReader(new InputStreamReader(stream), 32768);
			tokenizer = null;
		}
		public String next() {
			while(tokenizer == null || ! tokenizer.hasMoreTokens()) {
				try {
					tokenizer = new StringTokenizer(reader.readLine());
				} catch (IOException e) {
					throw new RuntimeException(e);
				}
			}
			return tokenizer.nextToken();
		}
		public int nextInt() {
			return Integer.parseInt(next());
		}
		public int[] nextIntArray(int n) {
			int[] arr = new int[n];
			for(int i = -1; ++i < n;) arr[i] = Integer.parseInt(next());
			return arr;
		}
		public long nextLong() {
			return Long.parseLong(next());
		}
		public float nextFloat() {
			return Float.parseFloat(next());
		}
	}
} public class Main {

	public static void main(String[] args) {
		InputStream inputStream = System.in;
		OutputStream outputStream = System.out;
		InputReader in = new InputReader(inputStream);
		PrintWriter out = new PrintWriter(outputStream);
		Task solver = new Task();
		solver.solve(1, in, out);
		out.close();

	}
	static class Task{
		int M = (int) (1e9 + 7);
		public void solve(int testNumber, InputReader in, PrintWriter out) {
			
				int w = in.nextInt(), h = in.nextInt(), x = in.nextInt(), y = in.nextInt();
				int f = ((x*2==w && y*2 == h)?1:0);
				out.print(String.format("%.9f %d",(double)w*h/2.0,f));
				
				
					
						
		
				
		}//Solve
		
	}//task
	
	
	static class InputReader{
		public BufferedReader reader;
		public StringTokenizer tokenizer;
		public InputReader(InputStream stream) {
			reader = new BufferedReader(new InputStreamReader(stream), 32768);
			tokenizer = null;
		}
		public String next() {
			while(tokenizer == null || ! tokenizer.hasMoreTokens()) {
				try {
					tokenizer = new StringTokenizer(reader.readLine());
				} catch (IOException e) {
					throw new RuntimeException(e);
				}
			}
			return tokenizer.nextToken();
		}
		public int nextInt() {
			return Integer.parseInt(next());
		}
		public int[] nextIntArray(int n) {
			int[] arr = new int[n];
			for(int i = -1; ++i < n;) arr[i] = Integer.parseInt(next());
			return arr;
		}
		public long nextLong() {
			return Long.parseLong(next());
		}
		public float nextFloat() {
			return Float.parseFloat(next());
		}
	}
} Main
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.util.StringTokenizer;

public class Main {

	public static void main(String[] args) {
		InputStream inputStream = System.in;
		OutputStream outputStream = System.out;
		InputReader in = new InputReader(inputStream);
		PrintWriter out = new PrintWriter(outputStream);
		Task solver = new Task();
		solver.solve(1, in, out);
		out.close();

	}
	static class Task{
		int M = (int) (1e9 + 7);
		public void solve(int testNumber, InputReader in, PrintWriter out) {
			
				int w = in.nextInt(), h = in.nextInt(), x = in.nextInt(), y = in.nextInt();
				int f = ((x*2==w && y*2 == h)?1:0);
				out.print(String.format("%.9f %d",(double)w*h/2.0,f));
				
				
					
						
		
				
		}//Solve
		
	}//task
	
	
	static class InputReader{
		public BufferedReader reader;
		public StringTokenizer tokenizer;
		public InputReader(InputStream stream) {
			reader = new BufferedReader(new InputStreamReader(stream), 32768);
			tokenizer = null;
		}
		public String next() {
			while(tokenizer == null || ! tokenizer.hasMoreTokens()) {
				try {
					tokenizer = new StringTokenizer(reader.readLine());
				} catch (IOException e) {
					throw new RuntimeException(e);
				}
			}
			return tokenizer.nextToken();
		}
		public int nextInt() {
			return Integer.parseInt(next());
		}
		public int[] nextIntArray(int n) {
			int[] arr = new int[n];
			for(int i = -1; ++i < n;) arr[i] = Integer.parseInt(next());
			return arr;
		}
		public long nextLong() {
			return Long.parseLong(next());
		}
		public float nextFloat() {
			return Float.parseFloat(next());
		}
	}
}