download: failure of Toph

[kmyk]

There are two samples in https://toph.co/p/new-year-couple, but the only one is detected now

$ oj dl https://toph.co/p/new-year-couple
[x] problem recognized: TophProblem.from_url('https://toph.co/p/new-year-couple'): https://toph.co/p/new-year-couple
[x] load cookie from: /home/user/.local/share/online-judge-tools/cookie.jar
[x] GET: https://toph.co/p/new-year-couple
[x] 200 OK
[x] save cookie to: /home/user/.local/share/online-judge-tools/cookie.jar
[x] append history to: /home/user/.cache/online-judge-tools/download-history.jsonl

[*] sample 0
[x] input: sample-1
8
mrtarek 10 20
optarkk 15 30
mmtarqq 12 25
aatarcc 8 18
heloptr 22 50
memopto 10 40
kokoptz 15 45
lmkoopa 5 90
5
3 5 20
3 5 11
3 5 16
5 6 25
5 6 16
[!] file already exists: test/sample-1.in
[!] skipped
[x] output: sample-1
3
1
6
3
1
[+] saved to: test/sample-1.out