Pro.ID | Problem Title | Difficulty | Notes |
1269 | 迷宫城堡 | Difficulty: 2 | there are so many ways to solve this problem |
1285 | 确定比赛名次 | Difficulty: 1 | Topologic |
1530 | Maximum Clique | Difficulty: 3 | Maximum Clique |
3311 | Dig The Wells | Difficulty: 3 | Steiner tree |
3329 | The Flood | Difficulty: 1 | Flood Fill |
4085 | Peach Blossom Spring | Difficulty: 4 | Steiner tree |