https://open.kattis.com/contests/dinxfa
https://open.kattis.com/contests/paay7m
https://open.kattis.com/contests/uspjkb
https://open.kattis.com/contests/h36zos
https://open.kattis.com/contests/qy2mr8
https://open.kattis.com/contests/ungueh
https://open.kattis.com/contests/t5y7y5
https://open.kattis.com/contests/wsqtjq
https://open.kattis.com/contests/kwrmpo