#include <bits/stdc++.h>
#define syosu(x) fixed<<setprecision(x)
using namespace std;
typedef long long ll;
typedef unsigned int uint;
typedef unsigned long long ull;
typedef pair<int,int> P;
typedef pair<double,double> pdd;
typedef pair<ll,ll> pll;
typedef vector<int> vi;
typedef vector<vi> vvi;
typedef vector<double> vd;
typedef vector<vd> vvd;
typedef vector<ll> vl;
typedef vector<vl> vvl;
typedef vector<string> vs;
typedef vector<P> vp;
typedef vector<vp> vvp;
typedef vector<pll> vpll;
typedef pair<int,P> pip;
typedef vector<pip> vip;
const int inf=1<<30;
const ll INF=1ll<<60;
const double pi=acos(-1);
const double eps=1e-11;
const ll mod=1e9+7;
const int dx[4]={-1,0,1,0},dy[4]={0,-1,0,1};

int a[3];
string s;

int f(int &I){
	if(isdigit(s[I])) return s[I++]-'0';
	if(isalpha(s[I])) return a[s[I++]-'P'];
	if(s[I]=='-'){
		int t=f(++I);
		if(t==2) t=0;
		else if(t==0) t=2;
		return t;
	}
	int x=f(++I);
	char c=s[I];
	int y=f(++I);
	I++;
	if(c=='*') return min(x,y);
	else return max(x,y);
}

int main(){
	ios::sync_with_stdio(0);
	cin.tie(0);
	while(1){
		cin>>s;
		if(s==".") break;
		int res=0;
		for(int i=0;i<27;i++){
			a[0]=i%3;
			a[1]=i/3%3;
			a[2]=i/9%3;
			int I=0;
			if(f(I)==2) res++;
		}
		cout<<res<<endl;
	}
}
