#include <stdio.h> #include<math.h> int main() { int h,r; scanf("%d %d",&h,&r); int water = 0; water = 3.14*h*pow(r,2); int L = 10000; if(L % water == 0) { printf("%d",L/water); } else { printf("%d",(L / water)+1); } return 0; }