a148. You Cannot Pass?!

#include 



using namespace std;



int main()

{

    int num;

    while(cin>>num)

    {

                   double sum=0,avg;

                   for(int i=0;i                   {

                           int score;

                           cin>>score;

                           sum += score;       

                   }

                   avg = sum / num;

                   cout<<((avg>59)? "no":"yes")<    } 

    return 0;

}