//#include <iostream>
#include <cstdio>
//using namespace std;
int main()
{
    double a,b,c,d;
    scanf("%lf%lf%lf%lf",&a,&b,&c,&d);
    double avg = (a*2 + b*3 + c*4 + d*1)/(1+2+3+4);
    printf("Media: %.1lf\n",avg+0.0000001);//精度处理常用方法
    if(avg >= 7)
        printf("Aluno aprovado.\n");
    else if(avg < 5)
        printf("Aluno reprovado.\n");
    else
        {
            printf("Aluno em exame.\n") ;
            double y,z;
            scanf("%lf",&y);
            printf("Nota do exame: %.1lf\n",y);
            z = (avg + y)/2;
            if(z >= 5)
               printf("Aluno aprovado.\n");
            else 
               printf("Aluno reprovado.\n");
            printf("Media final: %.1lf",z);
        }
    return 0;
}

这题主要在精度问题上烦人