#include <iostream>
 
using namespace std;
int* doubler(int *p,int n, int &newsize){
int m=0;
int i,k;
k=0;
for(i=0;i<n;i++){
 
    if(p[i]==0){
        k++;
    }
 
}
newsize=n-k;
int*B= new int [newsize];
for(i=0;i<n;i++){
        if(p[i]!=0)
    {
     B[m]=(p[i]*2);
     m++;
    }
}return B;}
 
int main()
{ int n,i,k,*p;
 
     cout<<"enter the size of the array"<<endl;
cin>> n;
    int*arr1= new int[n];
    for(i=0;i<n;i++){
        cin>>arr1[i];
    }
    p=doubler(arr1,n,k);
return 0;
 
}
 

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