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#include <cstdio>
using namespace std;

int main()
{
	long long c;
	scanf("%lld", &c);

	long long mod = 1;
	while (mod < c) mod *= 10;

	long long f0 = 0, f1 = 1, tmp;
	while (f1 < 100000000000000000)
	{
		tmp = f0 + f1;
		f0 = f1;
		f1 = tmp;
		if (tmp < 0) break;
		if (tmp % mod == c)
		{
			printf("%lld\n", tmp);
			return 0;
		}
	}
	printf("NIE\n");

	return 0;
}