Home
Problem Set
Training
Contest
Homework
Discussion
Record
Ranking
Login
Language
English
한국어
简体中文
正體中文
Homework Introduction
前缀和&差分,题目有难度,但不一定按难度排序。
Problem
Problem
P8218
【深进1.例1】求区间和
P8649
[蓝桥杯 2017 省 B] k 倍区间
P1719
最大加权矩形
P1314
[NOIP 2011 提高组] 聪明的质监员
P2367
语文成绩
P3397
地毯
P1083
[NOIP 2012 提高组] 借教室
P2004
领地选择
P3017
[USACO11MAR] Brownie Slicing G
P3406
海底高铁
P2882
[USACO07MAR] Face The Right Way G
P4552
[Poetize6] IncDec Sequence
P3029
[USACO11NOV] Cow Lineup S
P1904
天际线
P4375
[USACO18OPEN] Out of Sorts G
P5937
[CEOI 1999] Parity Game
P6625
[省选联考 2020 B 卷] 卡牌游戏
P12716
[Algo Beat Contest 002 C] Counting Square Numbers
Scoreboard
Help
Status
Done
Problem
18
Open Since
2025-10-3 9:00
Deadline
2025-10-18 23:59
Extension
24 hour(s)
CLOSE
SIGN IN
Using your HFOJ universal account
Username
Password
Remember me
Forgot password or username?