题目描述

blablabla

样例

#include<iostream>
#include<iomanip>
using namespace std;
int main() {
    double a, b, c, d, y;
    cin >> a >> b >> c >> d >> y;
    double x = (a * 2 + b * 3 + c * 4 + d * 1) / 10;
    cout << "Media: " << x << endl;
    if (x >= 7) {
        cout << "Aluno aprovado." << endl;
    }
    if (x < 5) {
        cout << "Aluno reprovado." << endl;
    }
    if (x >= 5 && x < 7) {
        cout << "Aluno em exame." << endl;
        cout << "Nota do exame: " << y << endl;
        double z = (x + y) / 2;
        if (z >= 5) {
            cout << "Aluno aprovado." << endl;
        }
        else cout << "Aluno reprovado." << endl;
        cout << "Media final: "<<z << endl;
    }
}

算法1

(暴力枚举) $O(n^2)$

blablabla

时间复杂度

参考文献

C++ 代码

blablabla

算法2

(暴力枚举) $O(n^2)$

blablabla

时间复杂度

参考文献

C++ 代码

blablabla