// yuki 927 Second Permutation
// 2019.11.24 bal4u

#include <stdio.h>

#define gc() getchar_unlocked()
#define pc(c) putchar_unlocked(c)

int a[10+'0'];

int main()
{
	int i, c, n, f;
	
	do c = gc(), ++a[c];
	while (c >= '0');
	
	n = 0;
	for (i = '0'; i <= '9'; ++i) if (a[i]) ++n;
	if (n < 2) goto Err;
	
	f = 0;
	for (i = '9'; n > 2; --i) if (a[i]) {
		while (a[i]) pc(i), f = 1, --a[i];
		--n;
	}
	while (a[i] == 0) --i;
	c = i; while (--a[i]) pc(c), f = 1;
	--i;
	
	while (a[i] == 0) --i;
	if (!f && i == '0') goto Err;
	pc(i), pc(c);
	while (--a[i]) pc(i);
	pc('\n');
	return 0;
	
Err: puts("-1");
	return 0;
}