int main() {
    long double innerRadius = 0, outerRadius = 0;
    long double width = 0, square = 0;
    long double pi = 3.14159265358979323846L;
    scanf("%Lf %Lf", &innerRadius, &outerRadius);
    square = pi * 100L * (outerRadius * outerRadius - innerRadius * innerRadius);
    width = outerRadius - innerRadius;
    printf("%.0Lf %.2Lf", width, square);
    return 0;
}