> #include <iostream>
> #include <cmath>
> 
> using namespace std;
> 
> #define MAX 1000
> 
> __int64 x[MAX], k[MAX];
> 
> int main()
> {
>         __int64 n, i, j, num, t, a, b, c, deta, x1, x2;
>         while(scanf("%I64d", &n) != EOF)
>         {
>                 t = 0, num = 0;
>                 while((t + 1) * (t + 2) * (2 * t + 3) <= 6 * n)
>                 {
>                         a = t + 1, b = t * (t + 1), c = (t * (t + 1) * (2 * t + 1)) / 6 - n;
>                         deta = b * b - 4 * a * c;
>                         if(deta >= 0)
>                         {
>                                 __int64 temp = (__int64) sqrt(deta);
>                                 if(temp * temp == deta && temp > b && ((-1) * b + temp) % (2 * a) == 0)
>                                 {
>                                         x1 = ((-1) * b + temp) / (2 * a);
>                                         x2 = ((-1) * b - temp) / (2 * a);
>                                         x[num] = x1;
>                                         k[num] = t + 1;
>                                         __int64 sum = 0;
>                                         for(i = 0; i < t + 1; i++)
>                                         {
>                                                 sum += x1 * x1;
>                                                 x1++;
>                                         }
>                                         if(sum == n)
>                                         {
>                                                 num++;
>                                         }
>                                 }
>                         }
>                         t++;
>                 }
>                 printf("%I64d\n", num);
>                 for(i = num - 1; i >= 0; i--)
>                 {
>                         printf("%I64d ", k[i]);
>                         for(j = 0; j < k[i]; j++)
>                         {
>                                 printf("%I64d ", x[i]++);
>                         }
>                         putchar('\n');
>                 }
>         }
>         return 0;
> }