#include <bits/stdc++.h>
using namespace std;
int main(){
    int T;
    cin>>T;
    while(T--){
        int n;
        cin>>n;
        if(n==0){
            cout<<n<<endl;
        }
        else{
            cout<<n/__gcd(n,2*(n+1))<<"/"<<2*(n+1)/__gcd(n,2*(n+1));
        }
    }
    return 0;
}