Examples

MST

https://www.acmicpc.net/problem/1944

https://www.acmicpc.net/problem/13418

https://www.acmicpc.net/problem/1774

https://www.acmicpc.net/problem/2887

https://www.acmicpc.net/problem/4386

https://www.acmicpc.net/problem/16398

Dijstra

https://www.acmicpc.net/problem/18352

https://www.acmicpc.net/problem/5719

https://www.acmicpc.net/problem/1854

https://www.acmicpc.net/problem/1261

https://www.acmicpc.net/problem/1504

https://www.acmicpc.net/problem/2211

https://www.acmicpc.net/problem/1167

https://www.acmicpc.net/problem/7812

https://www.acmicpc.net/problem/tags