#include <iostream>
#include <cmath>
using namespace std;
int main(){
int n,n0,i,nr=0,cifra;
double m;
cout<<"Introduceti numarul: ";
cin>>n;
n0=n;
//determinam nr de cifre din nr
while(n0>0){
nr++;
n0=n0/10;
};
for(i=nr-1;i>=0;i--){
if((nr-i)%2==0){
cifra=n/pow(10,i);
m=10*m+cifra;
}
n=n%(int)pow(10,i);
}
cout<<"Numarul obtinut este: "<<m;
return 0;
}
