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