#include<iostream>
#include<algorithm>
#include <list>
#include <math.h>
#include <iomanip>
using namespace std;
/*CODE*/

int main()
{
   /*CODE*/
    cout<<setprecision(9)<<fixed<</*CODE*/
    <<sqrt(r2);
return 0;
}

Using proprietary Intel compiler instead of free and de facto standard GCC is outrageous! I guess ФАС should investigate how this happened :-)