#include<bits/stdc++.h>

using namespace std;

int main(){

int n,t=0,d=0;

cin>>n;

int a[n];

for(int i=0;i<n;i++){

cin>>a[i];

if(i%2==1){

t+=a[i];

}

if(a[i]%2==0){

d++;

}

}

cout<<t<<endl;

for(int i=0;i<n;i++){

if(a[i]%2==0){

cout<<a[i]<<" ";

}

}

cout<<endl<<d;

}

uses crt;

var a: array[1..100] of integer;

i,n,s,d: integer;

begin

clrscr;

write ('nhap n: ');  readln (n);

s:=0;

d:=0;

for i:=1 to n do

begin

write ('nhap phan tu thu ',i,': ');  readln (a[i]);

if a[i] mod 2=0 then d:=d+1;

if i mod 2=1 then s:=s+a[i];

end;

writeln ('Tong la: ',s);

writeln ('Cac phan tu chan la: ');

for i:=1 to n do if s[i] mod 2=0 then write (a[i]:4);

writeln;

writeln ('Trong mang co ',d,' phan tu chan');

readln;

end.