#include
#include
using namespace std;
int main(){
int n;
while(cin>>n&&n){
int ans=0,a[300]={0},h=0,b[300]={0};
char c[300];
cin>>c;
for(int i=0;i
{
if(a[c[i]]==0){
if(ans
ans++;a[c[i]]++;b[c[i]]=1;
}
else
{
a[c[i]]++;b[c[i]]=0;
}
}
else
if(a[c[i]]==1&&ans<=n&&b[c[i]]==1){
if(a[c[i]]==1&&ans<=n&&b[c[i]]==1){
ans--;
}
else
if(a[c[i]]==1&&ans<=n&&b[c[i]]==0){
if(a[c[i]]==1&&ans<=n&&b[c[i]]==0){
h++;
}
}
if(h==0)
successfully."<<endl;
else
away."<<endl;
}
return 0;
}