#include <cstdio>
int main()
{
const size_t n = 3;
int a[n] = {1, 3, 5};
int b[n] = {2, 4, 6};
int c[n<<1];
for (size_t q=0, i=0; q<n; ++q)
c[i++] = a[q], c[i++] = b[q];
for (int x : c)
printf("%d ", x);
return 0;
}
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