# include <bits/stdc++.h>
using namespace std;
namespace Alisa {
    int n,m,a[10010];
    char s[10];
    int turn_(char s) { return s=='#' ? 0 : s-'a'+1;}
    void main() {
        scanf("%s%d",s+1,&m);
        for (int i=1;i<=m;i++) scanf("%d",&a[i]);

        n=strlen(s+1);
        for (int i=2;i<=n;i++) if (s[i]==s[i-1]) s[i]='#';

        vector<int> ans;
        int r=1;
        for (int i=1;i<=n;i++) for (int j=1;j<=20;j++) {
            while (a[r]%27!=turn_(s[i])) r++, assert(r<=m);
            ans.push_back(a[r]), r++;
        }

        printf("%d\n",(int)ans.size());
        for (auto o : ans) printf("%d ",o);
        printf("\n"); 
    }
}
namespace Eva {
    int n,a[10010];
    char ans[10];
    char turn_(int x) { return !x ? '#' : x+'a'-1;}
    void main() {
        scanf("%d",&n);
        for (int i=1;i<=n;i++) scanf("%d",&a[i]);

        int r=0;
        for (int i=1;i<=n;i++) if (i==1||a[i]%27!=a[i-1]%27) ans[++r]=turn_(a[i]%27);

        for (int i=2;i<=r;i++) if (ans[i]=='#') ans[i]=ans[i-1];

        printf("%s\n",ans+1);
    }
}
int main() {
//    freopen("in.in","r",stdin);
//    freopen("out.out","w",stdout);

    char opt[10];

    scanf("%s",opt+1);

    if (strlen(opt+1)==5) Alisa:: main();
    else Eva:: main();

    return 0;
}