Problem Tags

greedy
21
implementation
21
math
17
constructive algorithms
14
sortings
13
brute force
12
data structures
9
two pointers
9
binary search
8
dp
6
strings
6
线段树
5
树状数组
5
number theory
4
divide and conquer
3
hashing
3
graphs
3
shortest paths
3
递归
2
各省省选
2