#include<ioastream>
using namespace std;
int main(){
int x,n,k,oglindit=0,ok=1,s=0;
cin>>>>k>>n;
x=n;
while(x)
{ oglindit=oglindit*10+x%10;
//determin oglinditul ca sa am acces la prima cifra
if(x%10>=k) ok=0;
x=x/10;
}
n=n/10;//ii elimin ultima cifra -are rang impar, fiind prima
while(n)
{s=s+n%10;
n=n/100;
}
if(ok==1)
cout<<"Da";
cout<<s;
}