#include <iostream>
#include <iomanip>
#include <cmath>
 
using namespace std;
 
double szereg(double x, const int LWS = 20) {
    x=x-1.0;
    double w,s;
    int i;
    w=x;
    s=0;
    for(i=1;i<=LWS;i++){
        s += w/i;
        w *= -x;
    }
    return s;
}
 
int main() {
    double x;
    const int width = 12;
    cout << fixed ;
    while(cin >> x) {
        double y1 = log(x);
        double y2 = szereg(x);
        cout  << setprecision(2) << setw(5)  << x << setprecision(6)
              << setw(width)  << y1
              << setw(width)  << y2
              << setw(width)  << y2-y1
              << endl;
    }
    return 0;
}

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MQoxLjIKMC44CjAuOQowLjUKMS41CjAuOQowLjEKMi4wCg==

1
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1.5
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2.0