#include
int main()
{
int hh,mm,i,j;
scanf("%02d:%02d",&hh,&mm);
if(0<=hh&&hh<12 || hh=12&&mm=00){
printf("only %02d:%02d. Too early to Dang",hh,mm);
}else{
if(mm==00){
for(i=1;i<=hh-12;i++){
printf("Dang");
}
}else{
for(j=1;j<=hh-11;j++){
printf("Dang");
}
}
}
return 0;
}