#include <iostream> #include <iomanip> // 用于控制输出格式 using namespace std; int main() { int n; cin >> n; int scores[100]; // 假设最多100名学生 int sum = 0; int max_score = 0; int min_score = 100; // 初始设为最高可能值 for (int i = 0; i < n; ++i) { cin >> scores[i]; sum += scores[i]; if (scores[i] > max_score) { max_score = scores[i]; } if (scores[i] < min_score) { min_score = scores[i]; } } double average = static_cast<double>(sum) / n; // 输出总分、平均分（保留2位小数）、最高分、最低分 cout << sum << " " << fixed << setprecision(2) << average << " " << max_score << " " << min_score << endl; return 0; }