题目描述
blablabla
样例
blablabla
C++ 代码
#include <bits/stdc++.h>
using namespace std;
int main()
{
int L;
cin>> L;
char str;
cin>> str;
int n = 12;
double m[n][n];
double res = 0.0;
double re = 0.0;
for(int i =0; i < n; i++){
for(int j = 0; j < n; j++){
cin>> m[i][j];
if(str == 'S')
if(L == i){
//cout<< m[i][j] << endl;
re = re + m[i][j];
res = re;
}
if(str == 'M') {
if(L == i){
re = re + m[i][j];
res = re;
// cout<< res <<endl;
}
}
}
}
if(str == 'M') res = res / 12.0;
printf("%.1lf\n", res);
return 0;
}