silly.cc

#include <cstdio>

int main() {
	int a[10] = {0,1,2,3,4,5,6,7,8,9};
	int i = 3;
	printf("%d %d\n", (a[4]), 4[a]); // => 4 4
	printf("%d %d\n", (a[i]), i[a]); // => 3 3
}