TopCoder

User's AC Ratio

100.0% (5/5)

Submission's AC Ratio

100.0% (5/5)

Tags

Description

Input Format

Output Format

Sample Input 1

5 5
1 2
1 3
2 3
1 4
1 5

Sample Output 1

3
1 2 3

Sample Input 2

2 3
1 2
1 2
1 2

Sample Output 2

2
1 2

Sample Input 3

4 4
1 2
2 3
2 3
3 4

Sample Output 3

2
2 3

Hints

Problem Source

Subtasks

No. Testdata Range Score

Testdata and Limits

No. Time Limit (ms) Memory Limit (VSS, KiB) Output Limit (KiB) Subtasks
0 1000 2097152 65536
1 1000 2097152 65536
2 1000 2097152 65536
3 1000 2097152 65536
4 1000 2097152 65536
5 1000 2097152 65536
6 1000 2097152 65536
7 1000 2097152 65536
8 1000 2097152 65536
9 1000 2097152 65536
10 1000 2097152 65536
11 1000 2097152 65536
12 1000 2097152 65536
13 1000 2097152 65536
14 1000 2097152 65536
15 1000 2097152 65536
16 1000 2097152 65536
17 1000 2097152 65536
18 1000 2097152 65536