#include <bits/stdc++.h>

#define fi first
#define se second
#define forn(i,n) for(ll i=0; i<n; ++i)
#define for1(i,n) for(ll i=1; i<=n; ++i)
#define fore(i,l,r) for(ll i=l; i<=r; ++i)
#define pb push_back
#define el '\n'
#define d(x) cout<< #x<< " "<< x<< el

using namespace std;

typedef long long ll;


int main(){
    ios_base:: sync_with_stdio(false);
    cin.tie(NULL); cout.tie(NULL);
    string s;
    cin>>s;
    ll tam = s.size();
    vector<ll> coef;
    coef.reserve(tam);
    char cur ;
    if(s[0]=='A') cur='A';
    else cur = 'H';
    for1(i,tam-1){
        if(s[i]!=cur) {
            coef.pb(2*i+1);
            cur = s[i];
        }
    }
    if(coef.size()==0){
        cout<<coef.size()<<endl;
        if(s[0]=='A'){
            cout<<-1<<endl;
        } else{
            cout<<1<<endl;
        }
        return 0;
    }
    if(coef.size()==1){
         cout<<coef.size()<<endl;
        if(s[0]=='A'){
            cout<<1<<" "<<-coef[0]<<endl;
        } else{
            cout<<-1<<" "<<coef[0]<<endl;
        }
        return 0;
    }
    ll c[coef.size()+1]={0};
    c[0]= -coef[0];
    c[1]= 1;
    ll res[coef.size()+1]={0};

    for(int i= 1; i<coef.size(); ++i){
        for (int pos = 0; pos < coef.size()+1; pos++){
            //Vamos a multiplicar cada termino del polinomio2
            ll p2[2];
            p2[0]=(-coef[i]);
            p2[1]=1;
            for (int ter = 0; ter < 2; ter++){
            //Voy a explicar luego del código
                res[pos + ter] += c[pos] * p2[ter];
            }
        }
        forn(i,coef.size()+1){
            c[i]=res[i];
            res[i]=0;
        }
    }
//    forn(i,coef.size()+1){
//        d(i);
//        d(c[i]);
//    }
    cout<< coef.size()<<el;
    for(int i=coef.size(); i>= 0 ; --i){
        if(coef.size()%2==1){
           if(s[0]=='A'){
                cout<< c[i]<< " ";
           } else{
                cout<< -c[i]<< " ";
           }
        }
        else {
            if(s[0]=='H'){
                cout<< c[i]<< " ";
           } else{
                cout<< -c[i]<< " ";
           }
        }

    }
    cout<<endl;
}