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  1. import java.util.*;
  2. import java.lang.*;
  3. import java.io.*;
  4.  
  5. /* Name of the class has to be "Main" only if the class is public. */
  6. class Ideone
  7. {
  8.   public static void main (String[] args) throws java.lang.Exception{
  9.   // your code goes here
  10.   Scanner in = new Scanner(System.in);
  11.   int m = in.nextInt();
  12.   int n = in.nextInt();
  13.   boolean meven = m % 2 == 0 ? true : false;
  14.   boolean neven = n % 2 == 0 ? true : false;
  15.   double x;
  16.  
  17.   if (meven && neven)
  18.   {
  19.    x = m*n/4;
  20.   }
  21.   else if (meven && !neven)
  22.   {
  23.    x = m*(n-1) / 4;
  24.   }
  25.   else if (!meven && neven)
  26.   {
  27.    x = n*(m-1) / 4;
  28.   }
  29.   else
  30.   {
  31.    if (n>m)
  32.    {
  33.     int tmp=n;
  34.     n = m;
  35.     m = tmp;
  36.    }
  37.    if ((n-1)%4 == 0)
  38.    {
  39.     x = m*(n-1) / 4;
  40.    }
  41.    else
  42.    {
  43.     x = (m*(n-1)-2)/4;
  44.    }
  45.   }
  46.   System.out.println(x);
  47.  }
  48. }
Runtime error #stdin #stdout #stderr 0.08s 29168KB
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Standard input is empty
stdout
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Standard output is empty
stderr
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Exception in thread "main" java.util.NoSuchElementException
	at java.util.Scanner.throwFor(Scanner.java:862)
	at java.util.Scanner.next(Scanner.java:1485)
	at java.util.Scanner.nextInt(Scanner.java:2117)
	at java.util.Scanner.nextInt(Scanner.java:2076)
	at Ideone.main(Main.java:11)
https://ideone.com/FAvOb2
language:
Java (HotSpot 12)
created:
7 years ago
visibility:
public

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