Problem Tags

dp
22
math
22
greedy
16
data structures
14
constructive algorithms
13
*2100
10
graphs
10
trees
10
combinatorics
9
dfs and similar
9
*2300
8
bitmasks
6
sortings
6
number theory
5
binary search
5
brute force
5
divide and conquer
5
*2600
4
*2800
4
*2700
4