| 2057 |
Exploration
|
4.3 |
x 39
|
| 2056 |
Securing the Barn
|
7.7 |
x 10
|
| 2055 |
Hopscotch
|
5.4 |
x 16
|
| 2054 |
Satellite Photographs
|
4.1 |
x 62
|
| 2053 |
小强的生日
|
2.3 |
x 209
|
| 2052 |
棋盘上的车
|
3.3 |
x 139
|
| 2051 |
实验楼的电梯
|
2.8 |
x 183
|
| 2050 |
强盗
|
2.0 |
x 175
|
| 2049 |
Digital Root
|
5.6 |
x 29
|
| 2048 |
Calendar
|
3.9 |
x 69
|
| 2047 |
Coprimes
|
4.8 |
x 46
|
| 2046 |
Nearly prime numbers
|
4.9 |
x 37
|
| 2045 |
A/B (Big Integer)
|
4.1 |
x 108
|
| 2044 |
Distinct Subsequences
|
7.3 |
x 7
|
| 2043 |
Arranging Amplifiers
|
7.2 |
x 4
|
| 2042 |
Eating Together
|
4.7 |
x 25
|
| 2041 |
Meteor Shower
|
6.8 |
x 11
|
| 2040 |
Game of Lines
|
3.9 |
x 26
|
| 2039 |
Cow Multiplication
|
3.0 |
x 85
|
| 2038 |
Long Distance Racing
|
2.3 |
x 59
|
| 2037 |
Dining Cows
|
3.4 |
x 46
|
| 2036 |
变化
|
6.6 |
x 21
|
| 2035 |
解的个数
|
6.0 |
x 26
|
| 2034 |
比赛排名
|
4.2 |
x 94
|
| 2033 |
反转字符串
|
3.0 |
x 886
|
| 2032 |
判断两个数是否相等
|
4.2 |
x 175
|
| 2031 |
绝对值排序
|
0.9 |
x 2209
|
| 2030 |
统计
|
4.7 |
x 205
|
| 2029 |
Cell Phone Network
|
7.5 |
x 6
|
| 2028 |
Artificial Lake
|
7.5 |
x 6
|
| 2027 |
Haybale Guessing
|
8.1 |
x 6
|
| 2026 |
Telephone Lines
|
5.6 |
x 17
|
| 2025 |
Running
|
5.0 |
x 26
|
| 2024 |
Cow Contest
|
4.1 |
x 35
|
| 2023 |
iCow
|
4.3 |
x 40
|
| 2022 |
Election Time
|
3.3 |
x 66
|
| 2021 |
Costume Party
|
3.3 |
x 81
|
| 2020 |
加密2
|
2.1 |
x 184
|
| 2019 |
加密1
|
1.3 |
x 725
|
| 2018 |
矩形相交
|
3.1 |
x 144
|
| 2017 |
圆周排列
|
3.6 |
x 140
|
| 2016 |
PK
|
2.1 |
x 263
|
| 2015 |
自修室
|
3.0 |
x 439
|
| 2014 |
Sum of digits
|
5.1 |
x 27
|
| 2013 |
Ball in dream
|
3.9 |
x 34
|
| 2012 |
Factorials!!!
|
4.3 |
x 88
|
| 2011 |
Goat in the Garden
|
3.6 |
x 96
|
| 2010 |
菱形
|
1.0 |
x 1350
|
| 2009 |
查询Ⅱ
|
0.8 |
x 1120
|
| 2008 |
查询
|
0.4 |
x 1644
|
| 2007 |
握手
|
6.6 |
x 34
|
| 2006 |
孤独数
|
1.6 |
x 940
|
| 2005 |
整数分解
|
3.5 |
x 466
|
| 2004 |
火仙花数
|
0.4 |
x 2266
|
| 2002 |
求斜边
|
1.2 |
x 2493
|
| 2000 |
A-B(Big Integer)
|
2.0 |
x 800
|
| 1997 |
Secret Operation
|
9.9 |
x 1
|
| 1996 |
Wind Passages
|
8.5 |
x 2
|
| 1995 |
Queen’s Case
|
8.1 |
x 4
|
| 1994 |
Strange Couple
|
8.8 |
x 3
|
| 1993 |
Marked Ancestor
|
8.6 |
x 7
|
| 1992 |
Colored Octahedra
|
8.6 |
x 4
|
| 1991 |
Luigi’s Tavern
|
8.0 |
x 4
|
| 1990 |
Find the Point
|
8.5 |
x 4
|
| 1989 |
Erratic Sleep Habits
|
5.7 |
x 24
|
| 1988 |
Strange String Manipulation
|
5.1 |
x 25
|
| 1987 |
John's trip
|
7.2 |
x 6
|
| 1986 |
Transportation
|
9.9 |
|
| 1985 |
Pipe
|
7.5 |
x 4
|
| 1984 |
Cipher
|
9.6 |
x 2
|
| 1983 |
Department
|
9.9 |
|
| 1982 |
Joseph
|
3.9 |
x 30
|
| 1981 |
Sticks
|
5.3 |
x 61
|
| 1980 |
Maya Calendar
|
5.3 |
x 15
|
| 1979 |
Binary Polynomials
|
9.9 |
|
| 1978 |
Firefighters
|
9.3 |
x 2
|
| 1977 |
Power Network
|
9.4 |
x 2
|
| 1976 |
Common Subsequence
|
5.0 |
x 22
|
| 1975 |
Lord of the Ring
|
9.9 |
x 1
|
| 1974 |
Supermarket
|
9.6 |
x 2
|
| 1973 |
Crazy tea party
|
4.5 |
x 11
|
| 1972 |
Hidden Password
|
6.7 |
x 5
|
| 1971 |
Delta Encoding and Decoding
|
9.9 |
|
| 1970 |
Johnny Hates Math
|
9.9 |
|
| 1969 |
Moving Sticks
|
9.9 |
|
| 1968 |
The Writers' Club
|
9.9 |
|
| 1967 |
Let's Go to the Movies
|
9.9 |
|
| 1966 |
Incidental Points
|
9.9 |
x 1
|
| 1965 |
Fermat's Christmas Theorem
|
7.6 |
x 6
|
| 1964 |
A Tale from the Dark Side of the Moon
|
9.9 |
|
| 1963 |
Rotating Rings
|
9.9 |
x 1
|
| 1962 |
Hide That Number
|
5.8 |
x 19
|
| 1961 |
Judging Olympia
|
3.4 |
x 51
|
| 1960 |
Hypertheseus
|
9.9 |
|
| 1959 |
Soccer Tournament
|
9.9 |
|
| 1958 |
Railway Transportation
|
9.9 |
|
| 1957 |
Money Money Money, Must Be Funny
|
9.9 |
|
| 1956 |
Corporate Identity
|
9.9 |
|
| 1955 |
Geometric Shapes
|
9.9 |
x 1
|
| 1954 |
Roman Expressions
|
9.9 |
|