1077 互评成绩计算

题目链接：https://pintia.cn/problem-sets/994805260223102976/problems/994805262303477760

题解：

 1 #include <iostream>
 2 #include<vector>
 3 using namespace std;
 4 
 5 int main() {
 6     int n, m;
 7     cin >> n >> m;
 8     for (int i = 0; i < n; i++) {
 9         double G2;//定义为double便于后面计算final_score
10         cin >> G2;
11         vector<int>v;
12         for (int i = 0; i < n - 1; i++) {
13             int temp;
14             cin >> temp;
15             v.push_back(temp);
16         }
17         for (int i = 0; i < v.size(); i++) {
18             if (v[i]<0 || v[i]>m) {
19                 v.erase(v.begin() + i);
20                 i--;//保证删除后迭代器可以指向删除前的位置
21             }
22         }
23         int max = *v.begin(), min = *v.begin(), sum = 0;
24         for (int i = 0; i < v.size(); i++) {
25             if (max < v[i]) max = v[i];
26             if (min > v[i]) min = v[i];
27             sum += v[i];
28         }
29         double G1 = (double)(sum - max - min) / (v.size() - 2);//注意求平均时要减去最高分，最低分的两个组
30         int final_score = (G1 + G2) / 2 + 0.5;//加0.5保证四舍五入
31         cout << final_score << endl;
32     }
33     return 0;
34 }