void outp(int n) {
	if(!n)	return;
	outp(n / 10);
	putchar((n % 10) + '0');
}
int main() {
	freopen("a.out", "w", stdout);
	for(int i = 1; i <= 1000000; ++i) {
//		__builtin_printf("%d", (int)log(i));//0.1246s 
//		printf("%d", (int)log(i));//1.159s
//		outp((int)log(i));//0.07793s
	}
	cout << clock() << endl;
	return 0;
}