#include <fstream>
#include <cstdlib>
using namespace std;
ifstream cin("egalitati.in");
ofstream cout("egalitati.out");
int n,i,j,t[30];
char v1[30],v2[30][20],v3[30],v4[30][20],s[50],k;
int rezolva(int i)
{
    for(int k=1;k<=n;k++)
    if(v1[k]=='a'+i-1)
    {
        if(v3[k]==0)//necunoscuta=operand
            if(v2[k][0]<'a')//nec=123
                return atoi(v2[k]);
            else
                return rezolva(v2[k][0]-'a'+1);
        int a,b;//necunoscuta=operand1 op operand2
        if(v2[k][0]<'a')
            a=atoi(v2[k]);
        else
            a=rezolva(v2[k][0]-'a'+1);
        if(v4[k][0]<'a')
            b=atoi(v4[k]);
        else
            b=rezolva(v4[k][0]-'a'+1);
        if(v3[k]=='+')
            return a+b;
        return a*b;
    }
}
int main()
{
    cin>>n;
    cin.get();
    for(i=1;i<=n;i++)
    {
        cin.getline(s,50);
        v1[i]=s[0];
        t[s[0]-'a'+1]=-1;
        if(s[1]==' ')
            j=3;
        else
            j=2;
        if(s[j]==' ')
            j++;
        if(s[j]>='a')
            v2[i][0]=s[j++];
        else
            for(k=0;s[j]&&s[j]>='0'&&s[j]<='9';j++)
                v2[i][k++]=s[j];
        if(s[j])
        {
            if(s[j]==' ')
                j++;
            v3[i]=s[j++];
            if(s[j]==' ')
                j++;
            if(s[j]>='a')
                v4[i][0]=s[j++];
            else
                for(k=0;s[j]&&s[j]>='0'&&s[j]<='9';j++)
                    v4[i][k++]=s[j];
        }
    }
    for(i=1;i<=26;i++)
    if(t[i]==-1)
    {
        t[i]=rezolva(i);
        cout<<char('a'+i-1)<<" = "<<t[i]<<endl;
    }

}