前缀和 (共21题)
| ID | Problem Title | Source | AC Ratio | Solved | Tries | |
|---|---|---|---|---|---|---|
| 2101 | 组合数问题 | Admin | 47% | 15 | 32 | |
| 2209 | River Crossing渡河问题 | Admin | 70% | 69 | 129 | |
| 2801 | 区间和 | Admin | 47% | 53 | 122 | |
| 2802 | 最小和 | Admin | 49% | 51 | 118 | |
| 2803 | 分组游戏 | Admin | 20% | 53 | 299 | |
| 2804 | Olympiad | Admin | 64% | 45 | 81 | |
| 2805 | 最大正方形 | Admin | 63% | 51 | 121 | |
| 2806 | 集卡片 | Admin | 36% | 55 | 185 | |
| 2807 | Breed Counting | Admin | 57% | 36 | 70 | |
| 2808 | Subsequences Summing to Sevens | Admin | 42% | 30 | 90 | |
| 2809 | 激光炸弹 | Admin | 29% | 36 | 155 | |
| 2810 | 弹珠游戏 | Admin | 65% | 39 | 63 | |
| 2811 | 中位数图 | Admin | 51% | 20 | 41 | |
| 2812 | Longest Permutation | Admin | 30% | 11 | 43 | |
| 2814 | Creative Accounting | Admin | 40% | 14 | 43 | |
| 2816 | Multi-Subject Competition | Admin | 54% | 13 | 28 | |
| 2818 | 好消息 | Admin | 28% | 34 | 148 | |
| 2819 | [USACO17DEC]My Cow Ate My Homework | Admin | 33% | 22 | 79 | |
| 2820 | [USACO11MAR]Brownie Slicing | Admin | 56% | 4 | 9 | |
| 2821 | 弹珠游戏 | Admin | 50% | 0 | 2 | |
| 4834 | 【NOIP2015】推销员 | Admin | 49% | 16 | 37 |