PROGRAMMING:Big Ben

There is a guy who calls himself "Big Ben V" on Weibo. He rings the bell every day to urge the code farmers to cherish their bodies and go to bed early. However, because benzhong's own work and rest is not very regular, so the bell does not ring regularly. Generally speaking, the number of ringing points is determined by the time of ringing. If it happens to be struck at a certain hour, then the "Dang" number is equal to that hour; If it's past the hour, knock down an hour. In addition, although there are 24 hours in a day, the clock only strikes 1-12 times in the second half of the day. For example, ringing the bell at 23:00 is "dangdangdangdangdangdangdangdangdangdangdangdangdangdangdangdangdangdangdangdangdangdangdangdangdangdangdangdangdangdangdangdangdangdangdangdangdangdangdangdangdangdangdangdangdangdangdangdangdangdangdangdangdangdangdangdangdangdangdangdangdangdangdangdangdangdangdangdangdangdangdangdangdangdangdangdangdangdangdangdangdangdangdangdang. Between midnight 00:00 and noon 12:00 (including endpoint time), stupid clocks don't ring.
Now please write a program to ring Big Ben according to the current time.
###Input format:
Enter the first line to give the current time in the format of ` HH: mm '. Where ` HH 'is the hour, between 00 and 23` Mm 'is a minute, between 00 and 59.
###Output format:
Ring the bell for Big Ben according to the current time, that is, output the corresponding number of 'dangs' in a line. If it is not a ringing period, output:
```
Only hh:mm. Too early to Dang.
```
Where ` HH: mm 'is the input time.
###Input sample 1:
```in
19:05
```
###Output sample 1:
```out
DangDangDangDangDangDangDangDang
```
###Input example 2:
```
07:05
```
###Output example 2:
```
Only 07:05. Too early to Dang.
```






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