北大Judge Girl
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-44. Library Fine
The problem with troubleshooting is that trouble shoots back.
Problem
Testdata
1.in
1.out
10.in
10.out
11.in
11.out
12.in
12.out
13.in
13.out
14.in
14.out
14.test.out
15.in
15.out
2.in
2.out
3.in
3.out
4.in
4.out
5.in
5.out
6.in
6.out
7.in
7.out
8.in
8.out
9.in
9.out