C++ 代码
#include <iostream>
using namespace std;
int main(){
char c;
cin >> c;
double sum = 0;
int r = 0;
for(int i = 0; i < 12; i++){
if(i >= 6 && i <= 10) r--;
for(int j = 0; j < 12; j++){
double tmp;
cin >> tmp;
if(j <= r && i >= 1 && i <= 10) {
sum += tmp;
}
}
if(i >= 1 && i <= 5) r++;
}
if(c == 'S') printf("%.1f",sum);
else printf("%.1f",sum / 30);
}