https://open.kattis.com/contests/xqnia5
https://open.kattis.com/contests/kqsomu
https://open.kattis.com/contests/kqsomu
https://open.kattis.com/contests/bvah77
https://open.kattis.com/contests/nhioca
https://open.kattis.com/contests/cyp9px
https://open.kattis.com/contests/vc8qcs
https://open.kattis.com/contests/j6ciun
https://open.kattis.com/contests/emq6j2
https://open.kattis.com/contests/zbrft3
https://open.kattis.com/contests/uscteu
https://open.kattis.com/contests/g5q3ch
https://open.kattis.com/contests/tetrs8
https://open.kattis.com/contests/ptinhs
https://open.kattis.com/contests/djjtox
https://open.kattis.com/contests/mo9uvi
https://open.kattis.com/contests/mtepvw
https://open.kattis.com/contests/fnkevm
https://open.kattis.com/contests/picrzq
https://open.kattis.com/contests/vj4p98