#include<bits/stdc++.h> using namespace std; int main() { int k; cin>>k; for(int i=k+1;i<=2*k;i++){ int a=i-k; int b=i*k; if(b%a==0){ cout<<"1/"<<k<<" = 1/"<<i<<" + 1/"<<b/a<<endl; } } return 0; }