#include<stdio.h>
int sqn(int x);
int sqnK(int num,int k);
int main()
{
  int number = 17,k=2;
  printf("sqn of %d after %d sqn operation: %d \n",number,k,sqnK(number,k));
  return 0;
}
int sqn(int x)
{
  int sum = 0;
  while(x>0)
  {
    sum = sum + (x%10)*(x%10);
    x = x/10;
  }
  return sum;
}
int sqnK(int num,int k)
{
  int i=0;
  for(i = 0;i<k;i++)
  {
    num = sqn(num);
  }
  return num;
}