11254

#include <cstdio>
#include <cmath>
using namespace std;
int main() {
    long long int a,b,c,i,j,m,n1,num,found;
    double n,det;
    while (scanf("%lld",&num)) {
        if (num<0) break;
        found = 0;
        a=num;
        b=num;
        c = (num/2) +1;
        for (m=0;m<=c&&!found;m++) {
            det = sqrt(1+4*(m*m+m+2*num));
            n = (-1+det)/2;
            n1 = n;
            if (n1==n) {
                found =1;
                a = n;
                b = 1+m;
            }
        }
        printf("%lld = %lld + ... + %lld\n",num,b,a);
    }
    return 0;
}