include [HTML_REMOVED]

using namespace std;
int main()
{
char op;
cin>>op;
double s=0;
for(int i=0;i<12;i)
for(int j=0;j<12;j)
{
double a;
cin>>a;
if(j>i&&i+j>11) s+=a;
}
printf(“%.1lf”,op==’S’?s:s/30);
}