Problem1868--【CSP2021-S-T1】廊桥分配

1868: 【CSP2021-S-T1】廊桥分配

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Time Limit : 1.000 sec  Memory Limit : 512 MB

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Solved: 1Submit Num: 1Statistics

Description

Input

Output

Sample Input Copy 

3 5 4
1 5
3 8
6 10
9 14
13 18
2 11
4 15
7 17
12 16

Sample Output Copy 

7

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Source/Category

NOIP 
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