# include <bits/stdc++.h>
using namespace std;
int N,A,B,M,D,H;
int cost[28];
vector <string> rows,arows;
vector <pair <string,int> > op,aop;
string s;
map <char,int> mp;
long long ANS = 0,AANS=1e18;
void copyy()
{
    int i;
    if(ANS>AANS)return ;
    arows.resize(rows.size());
    aop.resize(op.size());
    for(i=0;i<rows.size();i++)arows[i]=rows[i];
    for(i=0;i<op.size();i++)aop[i] = op[i];
    AANS = ANS;
    ANS = 0;
    rows.clear();
    op.clear();
    mp.clear();

}
void checkoccur()
{
    mp['_'] = 1;
    int i;
    for(i=0;i<s.size();i++)
    {
        if(mp.find(s[i])==mp.end())
        {
            string t = "";
            t+=s[i];
            rows.push_back(t);
            mp[s[i]] = rows.size();
        }
    }
}
void printrows()
{
    cout<<arows.size()<<endl;
    int i;

    for(i=0;i<arows.size();i++)
        cout<<arows[i]<<endl;
         cout<<aop.size()<<endl;;
        for(i=0;i<aop.size();i++){
            cout<<aop[i].first<<" ";
            if(aop[i].second>=0) cout<<aop[i].second;
             cout<<endl;}
}
void makebasic()
{
    int last = 1;
    int i;
    bool fl = false;
    for(i=0;i<s.size();i++)
    {
        if(s[i]=='_'){fl=true; continue;}

        int k = mp[s[i]];
        if(k!=last)
        {
            op.push_back({"cd",k});
            ANS+=D;
           // cout<<"cd "<<k<<endl;
            last = k;
        }
        if(!fl)
        {op.push_back({"w",1});ANS+=M;}
        else
        {
            ANS+=H;
            op.push_back({"pop",-1});
            ANS+=(M+M/2);
            op.push_back({"w",2});
            ANS+=H;
            op.push_back({"push",-1});
            fl=false;
        }
        //cout<<"w "<<1<<endl;
    }
}
void checkoccur2()
{
    int i;
    for(i=0;i<s.size();i++)
    {
        if(mp.find(s[i])==mp.end())
        {
            string t = "";
            t+=s[i];
            rows.push_back(t);
            mp[s[i]] = rows.size();
        }
    }
}
void makebasic2()
{
    int last = 1;
    int i;
    for(i=0;i<s.size();i++)
    {
        int k = mp[s[i]];
        if(k!=last)
        {
            ANS+= D;
            op.push_back({"cd",k});
           // cout<<"cd "<<k<<endl;
            last = k;
        }
        ANS+=M;
        op.push_back({"w",1});
        //cout<<"w "<<1<<endl;
    }
}
int main()
{
ios_base::sync_with_stdio(false);
cin.tie(nullptr);
cout.tie(nullptr);
freopen("printing.in","r",stdin);
freopen("printing.out","w",stdout);
cin>>N>>s>>A>>B>>M>>D>>H;
int i;
for(i=1;i<=27;i++)cin>>cost[i];
checkoccur();
ANS+=H;
ANS+=cost[rows.size()];
 rows[0] = '_' + rows[0];
op.push_back({"push",-1});
makebasic();
copyy();
checkoccur2();
ANS+=cost[rows.size()];
makebasic2();
copyy();
printrows();
return 0;
}