4845: P3029 [USACO11NOV] Cow Lineup S
Memory Limit：128 MB
Time Limit：1.000 S
Judge Style：Text Compare
Creator：
Submit：0
Solved：0
Description
Input
Output
Sample Input Copy
6
25 7
26 1
15 1
22 3
20 1
30 1 Sample Output Copy
4 HINT
