#include <stdio.h>
#include <math.h>
#define MAX 5000000
#define STEP 1000

main()
{
    double s = 0.0;
    long int n;
    for (n = 1 ; n <= MAX ; n++){
        s += 1./n;
        if ((n % STEP)==0) //STEP毎に表示する
            printf("Euler(%d) is %15.14f\n" ,
                       n, s - log((double)n));
    }
}