#include <stdio.h>
#include <math.h>
#define pi 3.14159265358979323846264338
double sympson(double top, double middle, double bottom, double cell){
    return (top + 4.0 * middle + bottom) * cell/6.0;
}
int main(void){
    int n, i;
    double sum;
    for(n = 2; n <= 4096;n *= 2){
        sum=0.0;
        for(i=0;i<n;i++){
            sum += sympson(1/( 1.0 + ((double)i/n) * ((double)i/n) ),
                            1/( 1.0 + ((double)(i*2.0+1.0)/(n * 2.0)) * ((double)(i*2.0+1.0)/(n * 2.0)) ),
                            1/(1.0 + ((double)(i+1.0)/n) * ((double)(i+1.0)/n)),
                            1.0/n);
        }
        printf("%d %18.16lf %18.16lf\n", n, 4.0 * sum, fabs(4.0 * sum - pi));
    }
}