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


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

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


int main(void) {
    int r, R;

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

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