| car | Batch | Minimum Spanning Tree, Union Find Disjoint Set, Graph Theory | 166 |
| oranges2 | Batch | Graph Theory, Minimum Spanning Tree, Lowest Common Ancestor | 51 |
| newtown | Batch | Graph Theory, Minimum Spanning Tree, Classic | 51 |
| sightseeing2 | Batch | RI NOI Selection Test 2015, Graph Theory, Minimum Spanning Tree | 44 |
| inheritance | Batch | JOI 2014/2015, Minimum Spanning Tree | 44 |
| dotjoin | Batch | Minimum Spanning Tree, Graph Theory | 43 |
| simplify | Batch | USACO Gold Dec 2011, Graph Theory, Minimum Spanning Tree | 12 |
| railroad | Batch | IOI 2016, Minimum Spanning Tree | 9 |
| toll | Batch | APIO 2013, Graph Theory, Minimum Spanning Tree | 2 |