#pragma region Macros

#include <bits/extc++.h>
using namespace std;
using namespace __gnu_pbds;
// using namespace __gnu_cxx;

#define TO_STRING(var) # var
#define pb emplace_back
#define int ll
#define endl '\n'

using ll = long long;
using ld = long double;
const ld PI = acos(-1);
const ld EPS = 1e-10;
const int INF = 1 << 30;
const ll INFL = 1LL << 62;
// const int MOD = 998244353;
const int MOD = 1000000007;

int ceil(int x, int y) {return (x > 0 ? (x + y - 1) / y : x / y);}
int POW(int x, int y) {
    if (y != (int)(y) or y < 0 or x != 0 && x != 1 && y > 64) {cout << "Error" << endl;return 0;}
    if (y == 0) return 1;
    if (y % 2 == 0) return POW(x * x, y / 2);
    return x * POW(x, y - 1);
}

__attribute__((constructor))
void constructor() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    cout << fixed << setprecision(15);
}

#pragma endregion

signed main() {
	string S;
	cin >> S;
	int N = S.size();

	for (int i = 9; i >= 1; i--) {
		for (int j = N - 1; j >= 0; j--) {
			if (S[j] == (char)('0' + i) && j == 0) continue;
			if (S[j] == (char)('0' + i)) {
				int k = 0;
				while (k != N && S[k] == (char)('0' + i)) {
					k++;
				}
				if (k == N) {
					for (auto &x : S) cout << x;
				} else {
					if (S[k] < S[j]) swap(S[k], S[j]);
					for (auto &x : S) cout << x;
				}
				cout << endl;
				return 0;
			}
		}
	}
	for (auto &x : S) cout << x;
	cout << endl;
}