#include<bits/stdc++.h> using namespace std; int main(){ int k; cin>>k; for(int x=k+1;x<=2*k;x++){ for(int y=k+1;y<=k*(k+1);y++){ if(x*y==k*x+k*y&&x<=y){ printf("1/%d = 1/%d + 1/%d\n",k,x,y); } } } return 0; }