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#include<iostream>
#include<cstdio>
#include<cstdlib>
#include<cmath>
#include<algorithm>
#include<vector>
#include<set>
#include<map>
#include<stack>
#include<queue>
#include<list>
#include<string>
#include<cstring>

using namespace std;

#define PB push_back
#define MP make_pair
#define F first
#define S second
#define ALL(x) (x).begin(),(x).end()
#define SIZE(x) (int)(x).size()
#define SORT(x) sort((x).begin(),(x).end())
#define CLEAR(tab) memset(tab, 0, sizeof(tab))
#define REP(x, n) for(int x = 0; x < (n); x++)
#define FOR(x, b, e) for(int x = (b); x <= (e); x++)
#define FORD(x, b, e) for(int x = (b); x >= (e); x--)
#define VAR(v, n) __typeof(n) v = (n)
#define FOREACH(i, c) for(VAR(i, (c).begin()); i != (c).end(); ++i)
#define DEBUG(fmt, ...) fprintf(stderr, fmt, ##__VA_ARGS__)

const int MAX_BUF_SIZE = 16384;
char BUFOR[MAX_BUF_SIZE];
int BUF_SIZE, BUF_POS;
char ZZZ;
#define GET(ZZZ){ZZZ='a';if(BUF_POS<BUF_SIZE)ZZZ=BUFOR[BUF_POS++];\
else if(!feof(stdin)){BUF_SIZE=fread(BUFOR,1,MAX_BUF_SIZE,stdin);\
ZZZ=BUFOR[0];BUF_POS=1;}}
#define GI(WW){do{GET(ZZZ);}while(!isdigit(ZZZ));WW=ZZZ-'0';\
while(1){GET(ZZZ);if(!isdigit(ZZZ))break;WW=WW*10+(ZZZ-'0');}}
#define GC(WW){do{GET(ZZZ);}while(!isalpha(ZZZ));WW=ZZZ;}

//FAST IO

typedef long long int LL;
typedef pair<int,int> PII;
typedef vector<int> VI;

const int MXN = 1000010;
const int C = 262144;
const int INF = 1000000001;

struct matrix {
	LL m[2][2];

	matrix() {
		m[0][0] = m[1][0] = m[0][1] = m[1][1] = 0;
	}

	void setId() {
		m[0][0] = m[1][1] = 1;
		m[0][1] = m[1][0] = 0;
	}

	void setFib() {
		m[0][0] = m[0][1] = m[1][0] = 1;
		m[1][1] = 0;
	}
};

char str[200];
LL a[20];
LL period[20];
int len;
LL mod[20];
LL fib[MXN];

LL mult(LL a, LL b) {
	LL res = 0;

	int i = 0;
	while(b) {
		LL tmp = ( (a * (b % 10) ) % mod[18 - i] ) * mod[i];
		res = (res + tmp) % mod[18];
		b /= 10;
		i++;
	}

	return res;
}

matrix mult(matrix &A, matrix &B, LL MOD) {
	matrix res;
/*
	FOR(i, 0, 1)
		FOR(j, 0, 1) {
			FOR(k, 0, 1)
				res.m[i][j] += mult(A.m[i][k], B.m[k][j]) % MOD;
			res.m[i][j] %= MOD;
		}
*/
	res.m[0][0] = (mult(A.m[0][0], B.m[0][0]) + mult(A.m[0][1], B.m[1][0]) ) % MOD;
	res.m[0][1] = (mult(A.m[0][0], B.m[0][1]) + mult(A.m[0][1], B.m[1][1]) ) % MOD;
	res.m[1][0] = (mult(A.m[1][0], B.m[0][0]) + mult(A.m[1][1], B.m[1][0]) ) % MOD;
	res.m[1][1] = (mult(A.m[1][0], B.m[0][1]) + mult(A.m[1][1], B.m[1][1]) ) % MOD;

/*
	res.m[0][0] = ( (A.m[0][0] * B.m[0][0] % MOD) + (A.m[0][1] * B.m[1][0] % MOD) ) % MOD;
	res.m[0][1] = ( (A.m[0][0] * B.m[0][1] % MOD) + (A.m[0][1] * B.m[1][1] % MOD) ) % MOD;
	res.m[1][0] = ( (A.m[1][0] * B.m[0][0] % MOD) + (A.m[1][1] * B.m[1][0] % MOD) ) % MOD;
	res.m[1][1] = ( (A.m[1][0] * B.m[0][1] % MOD) + (A.m[1][1] * B.m[1][1] % MOD) ) % MOD;
*/
	return res;
}

matrix pow(matrix &A, LL pot, LL MOD) {
	matrix res;
	res.setId();
	matrix tmp;
	tmp.setFib();

	while(pot) {
		if(pot % 2)
			res = mult(res, tmp, MOD);
		tmp = mult(tmp, tmp, MOD);
		pot /= 2;
	}

	return res;
}

LL getFib(LL num, LL MOD) {
	matrix x;
	x.setFib();
	return pow(x, num, MOD).m[0][1];
}

void test() {
	period[1] = period[2] = period[3] = 1500;
	mod[0] = 1; mod[1] = 10; mod[2] = 100; mod[3] = 1000;
	FOR(i, 4, 19) {
		period[i] = period[i - 1] * 10;
		mod[i] = mod[i - 1] * 10;
	}
	int i = 1;
	
	scanf("%s", str + 1);
	len = strlen(str + 1);

	LL pot = 1;
	FORD(i, len, 1) {
		a[len - i + 1] = a[len - i] + pot * (str[i] - '0');
		pot *= 10;
	}

	FOR(i, len + 1, 18)
		a[i] = a[i - 1];

	fib[1] = 1;
	FOR(i, 2, period[3])
		fib[i] = (fib[i - 1] + fib[i - 2]) % mod[3];

	vector<LL> vec;
	FOR(i, 0, period[3] - 1)
		if(a[3] == fib[i] % mod[min(len, 3)])
			vec.PB(i);

	FOR(i, 4, len) {
		vector<LL> tmp;
		FOREACH(it, vec) {
			LL w = *it;
				
			FOR(j, 0, 9) {
				LL kappa = getFib(w + period[i - 1] * (LL)j, mod[i]);
				if(kappa == a[i])
					tmp.PB(w + period[i - 1] * j);
			}
		}

		vec = tmp;
	}

	if(SIZE(vec) ) {
//		printf("TAK\n");
		LL wyn = vec[0] + period[len];
//		if(getFib(wyn, mod[len]) != a[len])
//			printf("(!@EJ(!@JE(!@JE(!@JE(!@EJ(!@J!@(EJ!@(JE\n");

		printf("%lld\n", wyn);
		//warto wypisac wynik (i go przetestowac)
	}
	else
		printf("NIE\n");
}

int main() {
	int te = 1;
//	scanf("%d", &te);
	while(te--)
		test();
	return 0;
}