Problem:
Score : 300 points

Problem Statement

You are given an integer N.

Find a triple of positive integers h, n and w such that 4/N = 1/h + 1/n + 1/w.

If there are multiple solutions, any of them will be accepted.

Constraints

It is guaranteed that, for the given integer N, there exists a solution such that h,n,w \leq 3500.

Inputs

Input is given from Standard Input in the following format:

N

Outputs

Print a triple of positive integers h, n and w that satisfies the condition, in the following format:

h n w

Sample Input 1

2

Sample Output 1

1 2 2

4/2 = 1/1 + 1/2 + 1/2.

Sample Input 2

3485

Sample Output 2

872 1012974 1539173474040

It is allowed to use an integer exceeding 3500 in a solution.

Sample Input 3

4664

Sample Output 3

3498 3498 3498

Solution in C (GCC 5.4.1) (judge verdict: Accepted)

#include<stdio.h>
int main()
{
  long long int i,j,n,x,y;
  scanf("%lld", &n);
  int flag = 0;
  for(i=1;i<=3500;i++)
    {
      for(j=1;j<=3500;j++)
	{
	  x= n*i*j;
	  y= 4*i*j-n*j-n*i;
	  if(y>0)
	    {
	      if(x%y==0)
		{
		  printf("%lld %lld %lld",i,j,x/y);
		  flag = 1;
		  break;
		}
	    }

	}
      if (flag == 1) break;
    }
  return 0;
}