Problem2515--Union of Interval

2515: Union of Interval

[Creator : ]
Time Limit : 1.000 sec  Memory Limit : 128 MB

SubmitSolved: 0Submit Num: 0Statistics

Description

Input



Sample Input Copy 

3
10 20
20 30
40 50

Sample Output Copy 

10 30
40 50

Source/Category

贪心 区间覆盖 
Submit