```cpp

include[HTML_REMOVED]

include[HTML_REMOVED]

using namespace std;
double a[12][12];
int main(){
int j,l;
double sum=0,aver;
char ch;
cin>>ch;
for(int i=0;i<12;i){
for(j=0;j<12;j){
cin>>a[i][j];
}
}
for(int i=0;i<12;i){
for(j=i+1;j<12;j){
sum+=a[i][j];
}
}
if(ch==’S’) printf(“%.1lf”,sum);
else if(ch==’M’) printf(“%.1lf”,sum/66);//算错数了！144-12=132
return 0;
}