/** gnu specific **/
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
/** contains everything I need in std **/
#include <bits/stdc++.h>

#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
#define sz(S) ((int)S.size())
#define FOR(i, st_, n) for(int i = st_; i < n; ++i)
#define RFOR(i, n, end_) for(int i = (n)-1; i >= end_; --i)
#define x first
#define y second
#define pb push_back
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef pair<ll, ll> pll;
typedef pair<int, int> pii;
typedef pair<double, double> pdd;
typedef unsigned long long ull;
typedef long double LD;
typedef pair<ull, ull> pull;
using namespace __gnu_pbds;
typedef tree<ll, null_type, less<>, rb_tree_tag, tree_order_statistics_node_update> ordered_set;
using namespace std;
#ifdef ONPC
mt19937 rnd(228);
#else
mt19937 rnd(chrono::high_resolution_clock::now().time_since_epoch().count());
#endif

vector<ll> getCoef(const vector<ll>& roots)
{
    vector<ll> coefs = {1};

    // Multiply (x - root) for each root
    for (ll root : roots)
    {
        std::vector<ll> newCoefs(sz(coefs)+ 1, 0);

        for (ll i = 0; i < sz(coefs); ++i)
        {
            newCoefs[i] += coefs[i];             // Current coefficient
            newCoefs[i + 1] -= coefs[i] * root; // Contribution from -root
        }

        coefs = std::move(newCoefs);
    }

    return coefs;
}

int solve()
{
	string s;
	if(!(cin>>s))return 1;
	int n=sz(s);
	vector<ll> a;
	FOR(i,0,n-1)
	{
		if(s[i]!=s[i+1])
			a.pb(2*(i+1)+1);
	}
	if(sz(a)==0)
	{
		if(s[0]=='A')cout<<"0\n-1\n";
		else cout << "0\n1\n";
		return 0;
	}
	cout<<sz(a)<<'\n';
	auto C = getCoef(a);
	int k =sz(C);
	for(auto item: C)
		cout<<(((int(s[0]=='H') + k)%2==0) ? item : -item)<<" ";
	cout<<'\n';
    return 0;
}

int32_t main()
{
    ios::sync_with_stdio(0);
    cin.tie(0);
    int TET = 1e9;
    //cin >> TET;
    for (int i = 1; i <= TET; i++)
    {
        if (solve())
        {
            break;
        }
#ifdef ONPC
        cout << "__________________________" << endl;
#endif
    }
#ifdef ONPC
    cerr << endl << "finished in " << clock() * 1.0 / CLOCKS_PER_SEC << " sec" << endl;
#endif
}