| Problem Name | Online Judge | Year | Contest | Difficulty Level | |
|---|---|---|---|---|---|
| 1 | Aibohphobia | SPOJ | 1 | ||
| 2 | Longest Common Subsequence | UVA | 1 | ||
| 3 | History Grading | UVA | 1 | ||
| 4 | Cross-country | SPOJ | 1 | ||
| 5 | Is Bigger Smarter? | UVA | 1 | ||
| 6 | Common Subsequence | PKU | 1 | ||
| 7 | Advanced Fruits | SPOJ | 1 | ||
| 8 | Palindrome 2000 | SPOJ | 1 | ||
| 9 | Common Subsequence | TJU | 1 | ||
| 10 | DNA Sequences | SPOJ | 1 | ||
| 11 | The Knapsack Problem | SPOJ | 1 | ||
| 12 | X-MEN | SPOJ | 2 | ||
| 13 | Prince and Princess | UVA | 2 | ||
| 14 | Gargari and Permutations | Codeforces | Codeforces Round #264 (Div. 2) | 3 | |
| 15 | Lucky Common Subsequence | Codeforces | Codeforces Round #201 (Div. 1) & Codeforces Round #201 (Div. 2) | 5 | |
| 16 | LCS Again | Codeforces | Codeforces Round #320 (Div. 1) [Bayan Thanks-Round] & Codeforces Round #320 (Div. 2) [Bayan Thanks-Round] | 8 | |
| 17 | k-longest Common Sequence | Live Archive | 2003 | Asia - Beijing | 10 |