这场后面unr了,F和G都没写出来,是第二天早上补的
2021-01-26
Codeforces Round /#691 (Div. 2) D. Glass Half Spilled(DP,背包) 含两种写法
Codeforces Round /#688 (Div. 2) D. Checkpoints(期望,概率,贪心)
Codeforces Round /#686 (Div. 3) F. Array Partition(ST,二分)
Codeforces Round /#683 (Div. 1) B.Catching Cheaters(DP最大子段和+LCS)
Codeforces Round /#679 (Div. 2) C.Perform Easily(二分/集合)