题目描述

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样例

#include <iostream>
using namespace std;
int main()
{
    double a,b,c,d;
    cin>>a>>b>>c>>d;
    double X=a*0.2+b*0.3+c*0.4+d*0.1;
    printf("Media: %.1lf\n",X);
    if(X<5.0)
    cout<<"Aluno reprovado.\n";
    else if(X>7.0)
    cout<<"Aluno aprovado.\n";
    else {
    cout<<"Aluno em exame.\n";
    double Y;
    cin>>Y;
    printf("Nota do exame: %.1lf\n",Y);
    double Z=(X+Y)/2;
    if(Z>=5.0)
    cout<<"Aluno aprovado.\n";
    else
    {cout<<"Aluno reprovado.\n";}
    printf("Media final: %.1lf\n",Z);
    }
    return 0;



}

算法1

(暴力枚举) $O(n^2)$

blablabla

时间复杂度

参考文献

C++ 代码

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算法2

(暴力枚举) $O(n^2)$

blablabla

时间复杂度

参考文献

C++ 代码

blablabla