#include <stdio.h>
size_t f(size_t, char [][*]);
size_t f(size_t n, char r[][2 < n ? f(n-2, 0) + f(n-1, 0) : 1])
{
return sizeof(*r);
}
int main()
{
printf("%zu\n", f
(10, 0)); // 55 }
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