Problem:
Score : 100 points

Problem Statement

AtCoDeer the deer found two positive integers, a and b.
Determine whether the product of a and b is even or odd.

Constraints

1 ≤ a,b ≤ 10000

a and b are integers.

Input

Input is given from Standard Input in the following format:

a b

Output

If the product is odd, print Odd; if it is even, print Even.

Sample Input 1

3 4

Sample Output 1

Even

As 3 × 4 = 12 is even, print Even.

Sample Input 2

1 21

Sample Output 2

Odd

As 1 × 21 = 21 is odd, print Odd.

Solution in C (GCC 5.4.1) (judge verdict: Wrong Answer)

#include<stdio.h>
int main(void)
{
  int a,b;
  int flag=0;
  scanf("%d %d",&a,&b);
  int tmp=b;
  printf("%d\n",tmp);

  do{
    a*=10;
    b/=10;
  }while(b>0);
  tmp+=a;
  printf("%d\n",tmp);
  for(int i=0;i<=10000;i++){
    if(tmp==i*i){
      flag=1;
      break;
    }else{
      flag=0;
    }
  }
  if(flag==1){
    puts("Yes");
  }else{
    puts("No");
  }
  return 0;
}