#include<bits/stdc++.h> using namespace std; int main(){ double r,h,v,tong; double PI=3.14; cin>>h>>r; v=PI*r*r*h; if(20000%(int)v!=0) tong=20000/(int)v+1; else tong=20000/(int)v; cout<<tong; return 0; }
求各位大佬点评一下!!!