| Problem Name | Add insights/hints |
|---|---|
| Codeforces 1861A: Prime Deletion | Add insights/hints |
| Codeforces 1861B: Two Binary Strings | Add insights/hints |
| Codeforces 1861C: Queries for the Array | Add insights/hints |
| Codeforces 1861D: Sorting By Multiplication | Add insights/hints |
| Codeforces 1861E: Non-Intersecting Subpermutations | Add insights/hints |
| Codeforces 1861F: Four Suits | Add insights/hints |
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