// yukicoder: 873 バイナリ、ヤバいなり！ｗ
// 2019.8.31 bal4u

#include <stdio.h>
#include <string.h>

#if 1
#define gc() getchar_unlocked()
#define pc(c) putchar_unlocked(c)
#else
#define gc() getchar()
#define pc(c) putchar(c)
#endif

int in() {   // 非負整数の入力
	int n = 0, c = gc();
	do n = 10 * n + (c & 0xf); while ((c = gc()) >= '0');
	return n;
}

void outs(char *s) { while (*s) pc(*s++); }

#define INF 0x01010101
#define LIM 555
int N;
int a[LIM]; int w;
int dp[300005];
char s01[LIM];

int last = '1';
void pr(int w) {
	static char *s = s01;
	last = s[w], s[w] = 0;
	outs(s);
	s[w] = last;
	s = (last == '0')? s01+1: s01;
}

int adv(int odd, int k) {
	int i;
	for (i = 2-odd; i <= w && a[i] <= k; i+=2) {
		if (dp[k] == dp[k-a[i]] + i) { k -= a[i], pr(i); return k; }
	}
	return -1;
}

int rev(int odd, int k) {
	int i = w;
	if ((i & 1) ^ odd) i--;
	while (i > 0 && a[i] > k) i -= 2;
	for ( ; i > 0; i-=2) {
		if (dp[k] == dp[k-a[i]] + i) { k -= a[i], pr(i); return k; }
	}
	return -1;
}

inline static void chmin(int *a, int b) { if (*a > b) *a = b; }

int main()
{
	int i, j, k;
	
	N = in();
	if (N == 1) { puts("0"); return 0; }
	w = 0; while (w*w <= N) w++, a[w] = w*w;
	i = 0; while (i < LIM) s01[i++] = '0', s01[i++] = '1';
	
	memset(dp, INF, sizeof(dp));
	dp[0] = 0;
	for (j = 1; j <= N; j++) {
		for (i = 1; a[i] <= j; i++) chmin(&dp[j], dp[j-a[i]] + i);
	}

	k = N;
	while (k > 0) {
		if (last == '1') {
			for (i = 1; i <= w && a[i] <= k; i+=2) {
				while (a[i] <= k && dp[k] == dp[k-a[i]] + i) { k -= a[i], pr(i); }
			}
			k = rev(0, k);
		} else {
			if ((j = adv(0, k)) >= 0) k = j;
			else k = rev(1, k);
		}
	}
	pc('\n');
	return 0;
}