#include <bits/stdc++.h>
using namespace std;
int main()
{
int s,n;
int first_term,last_term;
while (scanf("%d", &s), s != -1)
{
int n_sum =(int)sqrt(2*s);
for (n = n_sum ; n > 0; n--)
{
if ( (2 * s + n - n * n) % (2 * n) == 0 )
{
first_term = (2 * s + n - n * n) / (2 * n);
last_term = first_term + n - 1;
break;
}
}
printf("%d = %d + ... + %d\n", s, first_term, last_term);
// return 0* printf("%d = %d + ... + %d\n", s, a, last_term);
}
return 0;
}