暂时不会的题整理

Regular:

• problem/10 cross // blog/59
• problem/48 lcastat
• problem/49 letsandgo
• problem/36 tree
• problem/62 binary
• problem/64 swap
• problem/81 plan
• problem/84 kind
• problem/85 ball
• problem/89 vestige
• problem/90 trainfare
• problem/34 rocks // blog/63
• problem/35 colorings // blog/63
• problem/96 destiny // blog/124
• problem/99 shield // blog/125, 状态压缩
• problem/101 circle // blog/204, 离散化, Segment Tree
• problem/102 wander // blog/204, 强连通分量
• problem/104 rainbow // blog/206, 树形 DP
• problem/107 grenade
• problem/111 wish // blog/208, 区间dp
• problem/115 water
• problem/116 chemistry
• problem/117 book
• problem/118 string // KMP
• problem/119 home // Segment Tree, Tarjan

Mathematics:

• problem/47 mulone
• problem/38 sequence
• problem/86 gcd
• problem/87 years
• problem/33 primes // blog/63, 为什么 Euler 筛法会过不去
• problem/103 zip // blog/206, 逆元
• problem/108 command