|
|
504 |
P504 轻拍牛头
|
0 / 0 |
(无) |
|
|
505 |
P505 Goldbach's Conjecture
|
1 / 1 |
10 |
|
|
506 |
P506 Sherlock and His Girlfriend
|
16 / 52 |
6 |
|
|
507 |
P507 樱花
|
0 / 0 |
(无) |
|
|
508 |
P508 X-factor Chain
|
0 / 5 |
10 |
|
|
509 |
P509 聪明的燕姿
|
0 / 0 |
(无) |
|
|
510 |
P510 SuperGCD
|
1 / 5 |
10 |
|
|
511 |
P511 Sumdiv
|
1 / 1 |
10 |
|
|
512 |
P512 曹冲养猪
|
12 / 20 |
6 |
|
|
513 |
P513 Strange Way to Express Integers
|
0 / 0 |
(无) |
|
|
514 |
P514 计算器
|
0 / 4 |
10 |
|
|
515 |
P515 五指山
|
0 / 3 |
10 |
|
|
516 |
P516 Biorhythms
|
1 / 5 |
10 |
|
|
517 |
P517 C Looooops
|
0 / 0 |
(无) |
|
|
518 |
P518 矩阵 A×B
|
110 / 207 |
3 |
|
|
519 |
P519 Fibonacci 第 n 项
|
3 / 9 |
10 |
|
|
520 |
P520 Fibonacci 前 n 项和
|
0 / 1 |
10 |
|
|
521 |
P521 佳佳的 Fibonacci
|
1 / 2 |
10 |
|
|
522 |
P522 GT 考试
|
0 / 0 |
(无) |
|
|
523 |
P523 迷路
|
0 / 0 |
(无) |
|
|
524 |
P524 组合
|
0 / 17 |
10 |
|
|
525 |
P525 牡牛和牝牛
|
0 / 0 |
(无) |
|
|
526 |
P526 方程的解
|
0 / 0 |
(无) |
|
|
527 |
P527 车的放置
|
0 / 0 |
(无) |
|
|
528 |
P528 数三角形
|
0 / 0 |
(无) |
|
|
529 |
P529 Combination
|
3 / 3 |
10 |
|
|
530 |
P530 序列统计
|
1 / 1 |
10 |
|
|
531 |
P531 超能粒子炮・改
|
1 / 1 |
10 |
|
|
532 |
P532 礼物
|
0 / 0 |
(无) |
|
|
533 |
P533 网格
|
0 / 0 |
(无) |
|
|
534 |
P534 有趣的数列
|
0 / 0 |
(无) |
|
|
535 |
P535 树屋阶梯
|
1 / 2 |
10 |
|
|
536 |
P536 取石子游戏 1
|
9 / 31 |
7 |
|
|
537 |
P537 取石子游戏 2
|
8 / 12 |
8 |
|
|
538 |
P538 移棋子游戏
|
4 / 6 |
10 |
|
|
539 |
P539 取石子游戏
|
5 / 11 |
9 |
|
|
540 |
P540 巧克力棒
|
5 / 5 |
10 |
|
|
541 |
P541 取石子
|
6 / 12 |
9 |
|
|
542 |
P542 S-Nim
|
0 / 1 |
10 |
|
|
543 |
P543 取石子游戏
|
0 / 2 |
10 |
|
|
545 |
P545 贪婪的送礼者Greedy Gift Givers
|
8 / 19 |
7 |
|
|
546 |
P546 黑色星期五Friday the Thirteenth
|
7 / 9 |
9 |
|
|
547 |
P547 坏掉的项链Broken Necklace
|
23 / 62 |
5 |
|
|
548 |
P548 挤牛奶Milking Cows
|
4 / 5 |
10 |
|
|
549 |
P549 方块转换 Transformations
|
3 / 3 |
10 |
|
|
550 |
P550 命名那个数字 Name That Number
|
0 / 26 |
10 |
|
|
551 |
P551 回文平方数 Palindromic Squares
|
8 / 14 |
8 |
|
|
552 |
P552 双重回文数 Dual Palindromes
|
0 / 0 |
(无) |
|
|
553 |
P553 混合牛奶 Mixing Milk
|
13 / 141 |
9 |
|
|
554 |
P554 修理牛棚 Barn Repair
|
41 / 91 |
4 |
|
|
555 |
P555 最长的回文 Calf Flac
|
0 / 1 |
10 |
|
|
556 |
P556 牛式 Prime Cryptarithm
|
5 / 5 |
10 |
|
|
557 |
P557 时钟 The Clocks
|
0 / 0 |
(无) |
|
|
558 |
P558 铺放矩形块 Packing Rectangles
|
0 / 0 |
(无) |
|
|
559 |
P559 等差数列 Arithmetic Progressions
|
2 / 6 |
10 |
|
|
560 |
P560 母亲的牛奶 Mother's Milk
|
2 / 2 |
10 |
|
|
561 |
P561 数字三角形 Number Triangles
|
144 / 453 |
6 |
|
|
562 |
P562 回文质数 Prime Palindromes
|
10 / 25 |
6 |
|
|
563 |
P563 特殊的质数肋骨 Superprime Rib
|
3 / 4 |
10 |
|
|
564 |
P564 跳棋的挑战 Checker Challenge
|
7 / 26 |
7 |
|
|
565 |
P565 城堡 The Castle
|
2 / 3 |
10 |
|
|
566 |
P566 顺序的分数 Ordered Fractions
|
1 / 1 |
10 |
|
|
567 |
P567 三值的排序 Sorting a Three-Valued Sequence
|
3 / 4 |
10 |
|
|
568 |
P568 健康的荷斯坦奶牛 Healthy Holsteins
|
11 / 14 |
7 |
|
|
569 |
P569 海明码 Hamming Codes
|
54 / 129 |
5 |
|
|
570 |
P570 序言页码 Preface Numbering
|
1 / 1 |
10 |
|
|
571 |
P571 集合 Subset Sums
|
3 / 3 |
10 |
|
|
572 |
P572 循环数 Runaround Numbers
|
2 / 5 |
10 |
|
|
573 |
P573 派对灯 Party Lamps
|
1 / 2 |
10 |
|
|
574 |
P574 最长前缀 Longest Prefix
|
2 / 4 |
10 |
|
|
575 |
P575 奶牛家谱 Cow Pedigrees
|
9 / 10 |
9 |
|
|
576 |
P576 和为零 Zero Sum
|
3 / 3 |
10 |
|
|
577 |
P577 货币系统 Money Systems
|
45 / 141 |
6 |
|
|
578 |
P578 控制公司 Controlling Companies
|
1 / 1 |
10 |
|
|
579 |
P579 两只塔姆沃斯牛 The Tamworth Two
|
1 / 2 |
10 |
|
|
580 |
P580 穿越栅栏 Overfencing
|
1 / 3 |
10 |
|
|
581 |
P581 回家 Bessie Come Home
|
1 / 1 |
10 |
|
|
582 |
P582 牛的旅行 Cow Tours
|
2 / 2 |
10 |
|
|
583 |
P583 分数化小数 Fractions to Decimals
|
1 / 1 |
10 |
|
|
584 |
P584 最短网络Agri-Net
|
17 / 28 |
4 |
|
|
585 |
P585 总分 Score Inflation
|
36 / 80 |
4 |
|
|
586 |
P586 丑数 Humble Numbers
|
2 / 3 |
10 |
|
|
587 |
P587 形成的区域 Shaping Regions
|
0 / 0 |
(无) |
|
|
588 |
P588 联系 Contact
|
0 / 1 |
10 |
|
|
589 |
P589 邮票 Stamps
|
14 / 54 |
7 |
|
|
590 |
P590 阶乘 Factorials
|
1 / 11 |
10 |
|
|
591 |
P591 串 Stringsobits01
|
0 / 0 |
(无) |
|
|
592 |
P592 纺车的轮子 Spinning Wheels
|
2 / 2 |
10 |
|
|
593 |
P593 饲料调配 Feed Ratios
|
0 / 0 |
(无) |
|
|
594 |
P594 魔板 Magic Squares
|
1 / 1 |
10 |
|
|
595 |
P595 香甜的黄油 Sweet Butter
|
4 / 26 |
9 |
|
|
596 |
P596 骑马修栅栏 Riding the Fences
|
20 / 158 |
8 |
|
|
597 |
P597 商店购物 Shopping Offers
|
0 / 0 |
(无) |
|
|
598 |
P598 亚瑟王的宫殿 Camelot
|
0 / 0 |
(无) |
|
|
600 |
P600 游戏 A Game
|
0 / 1 |
10 |
|
|
601 |
P601 闭合的栅栏 Closed Fences
|
0 / 1 |
10 |
|
|
602 |
P602 美国血统 American Heritage
|
6 / 10 |
9 |
|
|
603 |
P603 电网 Electric Fences
|
0 / 0 |
(无) |
|
|
604 |
P604 “破锣摇滚”乐队 Raucous Rockers
|
0 / 0 |
(无) |
|
|
605 |
P605 麦香牛块 Beef McNuggets
|
2 / 2 |
10 |