Wodex opened the door successfully.
At the same time, horn sounded:
If you are not clever, the game will be so boring, next level will be more difficult. Ha-ha-ha...
So, Wodex came in with his partners.
At this room, there was a ciphertext on the wall.
The words means:
There are N lines, each line has two integers i and x, it means value x will be put on ith position. Every x is different.
How to form the sequence of these values?
Output the final sequence of these numbers.
77 33 69 51
31492 20523 3890 19243