include[HTML_REMOVED]
using namespace std;
int main()
{
double M[12][12];
double sum=0;
char A;
cin>>A;
for(int i=0;i<12;i)
{
for(int j=0;j<12;j)
{
cin>>M[i][j];
if(j>i&&i+j<=10)(改了好几遍,我是笨b)
{sum = sum+M[i][j];}
}
}
if(A==’S’){printf(“%.1lf”,sum);}
else if(A==’M’){printf(“%.1lf”,sum/30);}
return 0;
}