#include <stdio.h>

int main(){
    int n,i,num;
    scanf("%d",&n);
    int arr[n];
    
    for(i=0;i<n;scanf("%d",&arr[i]));
    
    if(n<0){
        printf("Invalid Input");
        return 0;
    }
    
    for(i=0;i<n;i++){
        num=arr[i];
        num = num*2;
        arr[i] = num;
    }
    for(i=0;i<n;printf("%d ",arr[i]));
    return 0;
}