first 10 days (1st Dec to 10th Dec): finished first 15 questions in shuatihuizong5, except 4, 10, 13, 15
every 10 days is a small goal
15th Dec: ask 13, 46
day 2: skipped 区间和 开发商购买土地
day 3: 707 hasnt finished
day 4: didnt do at all, 24, 19, 02/07, 142
28th: write 1047 by myself
fnished 239, didnt do 347
116 117 111 236
day 17 and 18 and 22: didnt do them
didnt do 450
15th night review: 17, 55, 45
968没做, 完全背包理论基础和后面都没做
dp: make first 8 parts