#include <iostream> using namespace std; int main() { int h,r; cin >> h >> r; int v=r*r*3.1415926*h; int v1=0; int sum=0; for(int i=1;i>=0;i++){ v1+=v; sum+=1; if(v1>20000||v1==20000){ break; } } cout << sum; return 0; }