17-programare

#include<iostream>
#include<fstream>
#include<iomanip>

using namespace std;


int main(){
    float md;
    int n,x,i=1,nr=0,s=0,v[20],aux,j,ok=0,b,y=1;
    ifstream f1("atestat.in");
    ofstream f2("atestat.out");
    f1>>n;
    while(i <= n){
        f1>>x;
        if(ok == 0){
            v[i]=x;
            ok=1;
        }
        else{
            b=0;
            for(j=1;j<i;j++)
                if(v[j]!= x)
                    b++;
            if(b == i-1){
                y++;
                v[y]=x;
            }
        }
        if(i%2 != 0){
            nr++;
            s=s+x;
        }
        i++;
    }
    md=s/nr;
    f2<<fixed<<setprecision(2)<<md<<endl;
    for(i=1;i<y;i++)
        for(j=i+1;j<=y;j++)
            if(v[i] > v[j] ){
            aux=v[i];
            v[i]=v[j];
            v[j]=aux;
        }
    for(i=1;i<=y;i++)
        f2<<v[i]<<" ";

    f2.close();
    f1.close();
}