#include <bits/stdc++.h>

using namespace std;

int main() {
    float a;
    cin >> a;
    int b = int(a * 10);
    bool first = true;
    while (b) {
        cout << b % 10;
        if (first) {
            cout << ".";
            first = false;
        }
        b /= 10;
    }
    return 0;
}