Online Judge System

An Online Judge System For Begneers

AC: Accept.
NA: Not Accepted. Some test cases were not currect.
WA: Wrong Answer with the line number and current answer.
TLE: Time Limit Exceed.
MLE: Memory Limit Exceed.
OLE: Output Limit Exceed.
RE: Runtime Error e.q.: Out of range in Array.
RF: Restricted Function.
CE: Compile Error. The Compiler
SE: System Error, undefined Errors.

本系統目前支援的程式語言如下：

User's guide | 我要加題目

Announcement

PCOI 2025 第一季題目清單 (2025-10-22 20:28)

PCOI 2023 第二季題目 (2024-02-24 23:45)

Latest Problems

b592. 數列中尋找最大值
a045. 尋找最大值
b517. 旅行計劃 (trip) -- 算C 測驗
b585. 迷宫
b539. 递增三元组
b520. 淘汰賽 (knockout) -- 算C 測驗
b519. 回文字串 (string) -- 算C 測驗
b518. 高樓 (buildings) -- 算C 測驗
a104. Fibonacci sequence
a064. 倒帶人生
a053. 華氏度到攝氏度轉換器
a039. 小明的作業 -- 板橋高中教學題

b553. 數制轉換
b552. 括弧匹配問題
a213. 守護城市(二維空間問題)
b540. 古堡算式
b541. 整数奇偶排序
b506. 不重複的最長子串的長度
b155. n! 之和
a142. Super X
a935. 派糖果
b412. 手鍊 (bracelet)
b509. 複數乘法
b538. 眾數

Top Coder
1360467-8@g.... ( )	830/85%
1361145-3@g.... (S4A29陳偉祺)	826/85%
1554101-0@g.... (S2B27黃宇彬)	748/77%
1453222-0@g.... (S3B08余汶憲)	740/76%
1454530-6@g.... (S3A14區叡恆)	732/75%
1454884-4@g.... (S3A06吳雨慧)	728/75%
1164114-2@g.... (S6B32戴卓妍)	709/73%
1452945-9@g.... (S3F39羅振軒)	698/72%
1450840-0@g.... (S3B11李子舜)	697/71%
1365536-1@g.... (S4B39謝淵楨)	639/65%
	more...

Top Author
kichan@g.pui... (陳嘉賢CHAN KA IN)	297
ricky (電腦黃)	226
lamkinun@gma... (Kinda Lam)	87
admin (Judge)	59
zero (管理員)	56
kulam@g.puic... (林建源)	43
cwng@g.puich... (吳振華NG CHAN WA)	34
xllin@g.puic... (Emily Lin)	29
issin@g.puic... (冼一心老師)	25
1360174-1@g.... (S4A03何彥樂)	23

Top School
1: Pui Ching Middle School
2: Pui Ching Middle SchooI
more...