Hello, world!

// Example program
#include <iostream>
#include <string>
#include <cmath>
using namespace std;

int main(){
  int A, B, C, D;
  cin>>A>>B>>C;
  D=B*B-4*A*C;
  if(D<0){
      cout<<"No roots";
  }
  else{
      if(D==0){
          cout<<-B/(2*A);
      }
      else{
          cout<<(-B-sqrt(D))/(2*A)<<"; "<<(-B+sqrt(D))/(2*A);
      }
  }
  return 0;
}