#include<bits/stdc++.h>
using namespace std;
using ll = long long;
#define rep(i,m,n) for(int i=m; i<n; ++i)
#define repl(i,m,n) for(ll i=m; i<n; ++i)
#define all(a) (a).begin(), (a).end()
#define rall(a) (a).rbegin(), (a).rend()

ll gcd(ll a, ll b){
    return a % b ? gcd(b, a % b) : b;
}

int main(){
    string X;
    cin >> X;

    int len = X.size(), dot = -1;
    rep(i, 0, len){
        if(X[i] == '.'){
            dot = i;
            break;
        }
    }

    if(dot == -1){
        cout << X << "/1" << endl;
    }else{
        string Y = X.substr(dot+1);
        int len2 = Y.size();

        ll S = stoi(Y), B = 1LL;
        rep(i, 0, len2) B *= 10LL;
        ll g = gcd(S, B);
        cout << S/g << "/" << B/g << endl;
    }
    return 0;
}