diff --git a/src/data_structures/disjoint_set_union.md b/src/data_structures/disjoint_set_union.md index a2c488ec9..5f1480e70 100644 --- a/src/data_structures/disjoint_set_union.md +++ b/src/data_structures/disjoint_set_union.md @@ -583,3 +583,7 @@ However it should also be noted, that there are several articles **disputing** t * [TIMUS - Parity](http://acm.timus.ru/problem.aspx?space=1&num=1003) * [SPOJ - Strange Food Chain](http://www.spoj.com/problems/CHAIN/) * [SPOJ - COLORFUL ARRAY](https://www.spoj.com/problems/CLFLARR/) +* [SPOJ - Consecutive Letters](https://www.spoj.com/problems/CONSEC/) +* [Toph - Unbelievable Array](https://toph.co/p/unbelievable-array) +* [HackerEarth - Lexicographically minimal string](https://www.hackerearth.com/practice/data-structures/disjoint-data-strutures/basics-of-disjoint-data-structures/practice-problems/algorithm/lexicographically-minimal-string-6edc1406/description/) +* [HackerEarth - Marriage Problem](https://www.hackerearth.com/practice/data-structures/disjoint-data-strutures/basics-of-disjoint-data-structures/practice-problems/algorithm/marriage-problem/description/) pFad - Phonifier reborn

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