QOJ.ac

QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#273289#5545. Contingency PlanGuanYunchangWA 1ms6448kbC++174.1kb2023-12-02 22:49:142023-12-02 22:49:15

Details

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Test #1:

score: 100
Accepted
time: 1ms
memory: 5880kb

input:

7
1 2
3 7
2 4
2 5
1 3
3 6

output:

2 3
1 7
4 7
5 7
2 7
6 7

result:

ok AC

Test #2:

score: 0
Accepted
time: 0ms
memory: 5928kb

input:

3
1 2
2 3

output:

-1

result:

ok AC

Test #3:

score: 0
Accepted
time: 0ms
memory: 6448kb

input:

2
2 1

output:

-1

result:

ok AC

Test #4:

score: -100
Wrong Answer
time: 1ms
memory: 5932kb

input:

5
2 1
2 3
2 4
4 5

output:

1 4
3 5
1 5
1 4

result:

wrong answer u and v already exists