#include <iostream>
using namespace std;
int main() {
int arr[] = {0,2,0,5,0,0,7,0};
int n = 8;
int removed = 0;
for (int i=0;i<n;i++)
{
if (arr[i]==0)
removed++;
else
arr[i-removed] = arr[i];
}
n -= removed;
if (n==0)
printf("NO");
else
for (int i=0;i<n;i++)
printf("%d ", arr[i]);
return 0;
}
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