#include using namespace std; #define endl '\n' #define ALL(a) (a).begin(),(a).end() #define ALLR(a) (a).rbegin(),(a).rend() #define spa << " " << #define test cout<<"test"<= (ll)(n); i--) using ll = long long; using ld = long double; const ll MOD = 1e9+7; //const ll MOD = 998244353; const ll INF = 1e18; using P = pair; template void chmin(T &a,T b){if(a>b)a=b;} template void chmax(T &a,T b){if(a void ans(bool x,T1 y,T2 z){if(x)cout< void debug(vector>&v,ll h,ll w){for(ll i=0;i&v,ll h,ll w){for(ll i=0;i void debug(vector&v,ll n){if(n!=0)cout< vector>vec(ll x, ll y, T w){ vector>v(x,vector(y,w));return v;} ll gcd(ll x,ll y){ll r;while(y!=0&&(r=x%y)!=0){x=y;y=r;}return y==0?x:y;} vectordx={1,0,-1,0,1,1,-1,-1}; vectordy={0,1,0,-1,1,-1,1,-1}; template vector make_v(size_t a,T b){return vector(a,b);} template auto make_v(size_t a,Ts... ts){ return vector(a,make_v(ts...)); } ostream &operator<<(ostream &os, pair&p){ return os << p.first << " " << p.second; } int main(){ cin.tie(nullptr); ios_base::sync_with_stdio(false); //cout<mp; string x;cin>>x; sort(ALLR(x)); rep(i,0,x.size()){ chmax(mp[x[i]-'0'],i); } if(mp.size()==1)cout<<-1<se; swap(x[idx],x[(ll)x.size()-1]); if(x[0]=='0')cout<<-1<