| Problem ID | Title | Source/Category | AC | Submit | |
| 1277 Problem A | K-ary tree | 173 | 748 | ||
| 1278 Problem B | Find the depth | 169 | 602 | ||
| 1279 Problem C | Pre, in and post | 168 | 402 | ||
| 1280 Problem D | Cut the stick | 168 | 511 | ||
| 1281 Problem E | Cut a tree | 156 | 360 | ||
| 1240 Problem F | K people travel on a tree | 48 | 252 |