#include <stdio.h>
#include <stdlib.h>
#include <math.h>


void rCaclulation (int r, int R) {
    int result;
    result = r > R? r-R : R-r;
    printf("%d\n", result);
}


void RCalculation (long double x, long double y) {
    long double result;
    long double pi= 3.14159265358979323846;
    result = x > y? pi *(x*x) - pi *(y*y) : pi *(y*y) - pi *(x*x);
    result *= 100;
    printf("%Lf", result);
}


int main(void) {
    int r, R;

    scanf("%d%d", &r, &R);

    rCaclulation(r, R);
    RCalculation(r, R);
       
 return 0;
}