SPOJ - Max Lines Problem Solution

SPOJ - Max Lines Problem Solution

Solution:-

#include<bits/stdc++.h>
using namespace std;

int main()
{
    cout<<fixed;
    cout<<setprecision(2);
    int tc;
    cin>>tc;
    for(int i=1;i<=tc;i++)
    {
        double r,max_line;
        cin>>r;
        max_line=(double)(4*r*r)+0.25;
        cout<<"Case "<<i<<": "<<max_line<<endl;
    }
    return 0;

}