#include<stdio.h>
#define PI 3.141592653589793
int main (){
    int r, h;
    float surfacearea, volume;
    scanf("%d", &r);
    scanf("%d", &h);
    if(r < 0 || h < 0){
        printf("Invalid input");
        return 0;
    }
    surfaceArea = 2 * PI * r * (r + h);
    volume = Pi *r * r *h;
    printf("surface Area: %.2f", volume);
    return 0;
}