Fractions Again

#include<bits/stdc++.h>

using namespace std;

vector<pair<int,int>>vec;

int main()
{
    int k,i,y,cnt;

    while(~scanf("%d",&k))
    {
        double x;

        cnt = 0;

        for(y=k+1; y<=2*k; y++)
        {
            if((k*y)%(y-k))
                continue;

            x = (k*y)/(y-k);

            if(x<y)
                break;

            if((x*y)/(x+y)==k)
            {
                vec.push_back(make_pair(int(x),y));

                cnt++;
            }
        }

        printf("%d\n",cnt);

        for(auto z : vec)
        {
            printf("1/%d = 1/%d + 1/%d\n",k,z.first,z.second);
        }

        vec.clear();
    }

    return 0;
}