Submission #7444880

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Source Code Expand

#include<iostream>
#include<iomanip>
#include<cmath>
#include<algorithm>
using namespace std;
int N,M;
double R,s;
main()
{
  cin>>R>>N>>M;
  for(int i=1;i<=N+M;i++)
  {
    s+=2*sqrt(R*R-pow(min(i<N?abs(R-2*R*i/N):1e9,i>M?abs(R-2*R*(i-M)/N):1e9),2));
  }
  cout<<fixed<<setprecision(16)<<s<<endl;
}

Submission Info

Judge Result