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[codeforces 1406A] Subset Mex 构造Mex(A)尽可能大
Codeforces Round #670 (Div. 2) 参与排名人数10765[codeforces 1406A] Subset Mex 构造Mex(A)尽可能大总目录详见https://blog.youkuaiyun.com/mrcrack/article/details/103564004在线测评地址http://codeforces.com/contest/1406/problem/AProblem Lang Verdict Time Memory A ...原创 2020-09-13 23:01:04 · 464 阅读 · 0 评论 -
[codeforces 1409D] Decrease the Sum of Digits 取出各个位置上的数+特判+数据进位考虑
Codeforces Round #667 (Div. 3) 参与排名人数12482[codeforces 1409D] Decrease the Sum of Digits 取出各个位置上的数+特判+数据进位考虑总目录详见https://blog.youkuaiyun.com/mrcrack/article/details/103564004在线测评地址http://codeforces.com/contest/1409/problem/DProblem Lang Verdic...原创 2020-09-06 22:21:04 · 270 阅读 · 0 评论 -
[codeforces 1409C] Yet Another Array Restoration 相邻元素差值尽可能小+向下拓展向上拓展
Codeforces Round #667 (Div. 3) 参与排名人数12482[codeforces 1409C] Yet Another Array Restoration 相邻元素差值尽可能小+向下拓展向上拓展总目录详见https://blog.youkuaiyun.com/mrcrack/article/details/103564004在线测评地址http://codeforces.com/contest/1409/problem/CProblem Lang Ver...原创 2020-09-06 16:09:46 · 350 阅读 · 0 评论 -
[codeforces 1409B] Minimum Product 让两数的差距越大越好
Codeforces Round #667 (Div. 3) 参与排名人数12482[codeforces 1409B] Minimum Product 让两数的差距越大越好总目录详见https://blog.youkuaiyun.com/mrcrack/article/details/103564004在线测评地址http://codeforces.com/contest/1409/problem/BProblem Lang Verdict Time Memory...原创 2020-09-06 11:12:39 · 655 阅读 · 0 评论 -
[codeforces 1409A] Yet Another Two Integers Problem 计算差值绝对值+向上取整
Codeforces Round #667 (Div. 3) 参与排名人数12482[codeforces 1409A] Yet Another Two Integers Problem 计算差值绝对值+向上取整总目录详见https://blog.youkuaiyun.com/mrcrack/article/details/103564004在线测评地址http://codeforces.com/contest/1409/problem/AProblem Lang Verdict...原创 2020-09-06 10:27:49 · 305 阅读 · 0 评论 -
[codeforces 1397B] Power Sequence 特判+边界处理
Codeforces Round #666 (Div. 2) 参与排名人数13870[codeforces 1397B] Power Sequence 特判+边界处理总目录详见https://blog.youkuaiyun.com/mrcrack/article/details/103564004在线测评地址https://codeforces.com/contest/1397/problem/BProblem Lang Verdict Time Memory B...原创 2020-09-02 23:10:23 · 272 阅读 · 0 评论 -
[codeforces 1397A] Juggling Letters 26个字母的桶排序
Codeforces Round #666 (Div. 2) 参与排名人数13870[codeforces 1397A] Juggling Letters 26个字母的桶排序总目录详见https://blog.youkuaiyun.com/mrcrack/article/details/103564004在线测评地址https://codeforces.com/contest/1397/problem/AProblem Lang Verdict Time Memor...原创 2020-08-31 22:32:42 · 447 阅读 · 0 评论 -
[codeforces 1400D] Zigzags 数组元素间隔相等的乘法原理
Educational Codeforces Round 94 (Rated for Div. 2) 参与排名人数15221[codeforces 1400D] Zigzags 数组元素间隔相等的乘法原理总目录详见https://blog.youkuaiyun.com/mrcrack/article/details/103564004在线测评地址https://codeforces.com/contest/1400/problem/D题目大意：在一个数组中，统计a[i]==a[k],a...原创 2020-08-30 15:41:17 · 231 阅读 · 0 评论 -
[codeforces 1400B] RPG Protagonist 顺藤摸瓜
Educational Codeforces Round 94 (Rated for Div. 2) 参与排名人数15221[codeforces 1400B] RPG Protagonist 顺藤摸瓜总目录详见https://blog.youkuaiyun.com/mrcrack/article/details/103564004在线测评地址https://codeforces.com/contest/1400/problem/BProblem Lang Verdict ...原创 2020-08-28 12:15:52 · 260 阅读 · 0 评论 -
[codeforces 1400C] Binary String Reconstruction 该题最大的难点是存在,i-x,i+x均不在字串的数据范围内的情况
Educational Codeforces Round 94 (Rated for Div. 2) 参与排名人数15221[codeforces 1400C] Binary String Reconstruction 该题最大的难点是存在,i-x,i+x均不在字串的数据范围内的情况总目录详见https://blog.youkuaiyun.com/mrcrack/article/details/103564004在线测评地址https://codeforces.com/contest/1400/...原创 2020-08-26 22:43:56 · 366 阅读 · 0 评论 -
[codeforces 1400A] String Similarity 打印奇数位置的字母
Educational Codeforces Round 94 (Rated for Div. 2) 参与排名人数15221[codeforces 1400A] String Similarity 打印奇数位置的字母总目录详见https://blog.youkuaiyun.com/mrcrack/article/details/103564004在线测评地址https://codeforces.com/contest/1400/problem/AProblem Lang Verd...原创 2020-08-26 12:13:18 · 261 阅读 · 0 评论 -
[codeforces 1401B] Ternary Sequence 焦点放在数组a,b中2的匹配情况
Codeforces Round #665 (Div. 2) 参与排名人数13763[codeforces 1401B] Ternary Sequence 焦点放在数组a,b中2的匹配情况总目录详见https://blog.youkuaiyun.com/mrcrack/article/details/103564004在线测评地址https://codeforces.com/contest/1401/problem/BProblem Lang Verdict Time ...原创 2020-08-25 22:18:36 · 260 阅读 · 0 评论 -
[codeforces 1398A] Bad Triangle 三角形两边之和大于第三边
Educational Codeforces Round 93 (Rated for Div. 2) 参与排名人数14614[codeforces 1398A] Bad Triangle 三角形两边之和大于第三边总目录详见https://blog.youkuaiyun.com/mrcrack/article/details/103564004在线测评地址https://codeforces.com/contest/1398/problem/AProblem Lang Verdic...原创 2020-08-24 20:21:13 · 930 阅读 · 1 评论 -
[codeforces 1392A] Omkar and Password 简单的找规律(数组元素中，只要有两个相邻的数不等，一定能合并成只剩一个元素)
Codeforces Global Round 10 参与排名人数11678[codeforces 1392A] Omkar and Password 简单的找规律(数组元素中，只要有两个相邻的数不等，一定能合并成只剩一个元素)总目录详见https://blog.youkuaiyun.com/mrcrack/article/details/103564004在线测评地址https://codeforces.com/contest/1392/problem/AProblem Lang ...原创 2020-08-24 19:57:59 · 337 阅读 · 0 评论 -
这些年打过的比赛codeforces
这些年打过的比赛codeforcesCodeforces Round #618 (Div. 2)[codeforces 1300A] Non-zero (0+和)的处理[codeforces 1300B] Assigning to Classes 排序+取中间两个数[codeforces 1300C] Anu Has a Function 位运算+打表找规律+最高位开始同位中只有1...原创 2019-12-16 15:40:26 · 5041 阅读 · 1 评论 -
[codeforces 1401A] Distance and Axis 涉及奇偶的讨论
Codeforces Round #665 (Div. 2) 参与排名人数13763[codeforces 1401A] Distance and Axis 涉及奇偶的讨论总目录详见https://blog.youkuaiyun.com/mrcrack/article/details/103564004在线测评地址https://codeforces.com/contest/1401/problem/AProblem Lang Verdict Time Memory...原创 2020-08-24 17:18:31 · 246 阅读 · 0 评论 -
[codeforces 1395A] Boboniu Likes to Color Balls 最多只有一种颜色球的数量是奇数
Codeforces Round #664 (Div. 2) 参与排名人数13062[codeforces 1395A] Boboniu Likes to Color Balls 最多只有一种颜色球的数量是奇数总目录详见https://blog.youkuaiyun.com/mrcrack/article/details/103564004在线测评地址https://codeforces.com/contest/1395/problem/AProblem Lang Verdict...原创 2020-08-13 21:28:30 · 332 阅读 · 0 评论 -
[codeforces 1391C] Cyclic Permutations 容斥原理+手工打表找规律
Codeforces Round #663 (Div. 2) 参与排名人数13075总目录详见https://blog.youkuaiyun.com/mrcrack/article/details/103564004在线测评地址https://codeforces.com/contest/1391/problem/C题目大意：基本思路：原创 2020-08-10 20:42:07 · 344 阅读 · 0 评论 -
[codeforces 1391B] Fix You 统计走出网格的方向数量
Codeforces Round #663 (Div. 2) 参与排名人数13075[codeforces 1391B] Fix You 统计出网格的方向数量总目录详见https://blog.youkuaiyun.com/mrcrack/article/details/103564004在线测评地址https://codeforces.com/contest/1391/problem/BProblem Lang Verdict Time Memory B - F...原创 2020-08-10 09:02:25 · 367 阅读 · 0 评论 -
[codeforces 1391A] Suborrays 自小到大输出(简单构造)
Codeforces Round #663 (Div. 2) 参与排名人数13075[codeforces 1391A] Suborrays 自小到大输出(简单构造)总目录详见https://blog.youkuaiyun.com/mrcrack/article/details/103564004在线测评地址https://codeforces.com/contest/1391/problem/A题目大意：构造一个关于n的排列数，要求满足(1≤i≤j≤n)，(piORpi+1OR…...原创 2020-08-10 08:35:02 · 284 阅读 · 0 评论 -
[codeforces 1393D] Rarity and New Dress 图形重叠+动归dp
Codeforces Round #662 (Div. 2) 参与排名人数13194总目录详见https://blog.youkuaiyun.com/mrcrack/article/details/103564004在线测评地址https://codeforces.com/contest/1393/problem/D题目大意：基本思路：原创 2020-08-09 16:23:31 · 392 阅读 · 0 评论 -
[codeforces 1393C] Pinkie Pie Eats Patty-cakes 桶排序+数字的两种分配形式
Codeforces Round #662 (Div. 2) 参与排名人数13194[codeforces 1393C] Pinkie Pie Eats Patty-cakes 桶排序+数字的两种分配形式总目录详见https://blog.youkuaiyun.com/mrcrack/article/details/103564004在线测评地址https://codeforces.com/contest/1393/problem/CProblem Lang Verdict ...原创 2020-08-09 09:54:39 · 377 阅读 · 0 评论 -
[codeforces 1393B] Applejack and Storages 桶排序套桶排序
Codeforces Round #662 (Div. 2) 参与排名人数13194总目录详见https://blog.youkuaiyun.com/mrcrack/article/details/103564004在线测评地址https://codeforces.com/contest/1393/problem/B题目大意：基本思路：原创 2020-08-08 19:53:41 · 425 阅读 · 0 评论 -
[codeforces 1393A] Rainbow Dash, Fluttershy and Chess Coloring 题意不清让人恼火
Codeforces Round #662 (Div. 2) 参与排名人数13194总目录详见https://blog.youkuaiyun.com/mrcrack/article/details/103564004在线测评地址https://codeforces.com/contest/1393/problem/AProblem Lang Verdict Time Memory A - Rainbow Dash, Fluttershy and Chess Colori...原创 2020-08-08 11:18:28 · 763 阅读 · 0 评论 -
[codeforces 1399D] Binary String To Subsequences 交错的两个栈(0栈,1栈)
Codeforces Round #661 (Div. 3) 参与排名人数12987[codeforces 1399D] Binary String To Subsequences 交错的两个栈(0栈,1栈)总目录详见https://blog.youkuaiyun.com/mrcrack/article/details/103564004在线测评地址https://codeforces.com/contest/1399/problem/DProblem Lang Verdict...原创 2020-08-07 21:05:33 · 444 阅读 · 0 评论 -
[codeforces 1399C] Boats Competition 桶排序+从总重量出发统计队数+注意边界处理
Codeforces Round #661 (Div. 3) 参与排名人数12987[codeforces 1399C] Boats Competition 桶排序+从总重量出发统计队数+注意边界处理总目录详见https://blog.youkuaiyun.com/mrcrack/article/details/103564004在线测评地址https://codeforces.com/contest/1399/problem/CProblem Lang Verdict T...原创 2020-08-06 21:21:48 · 465 阅读 · 0 评论 -
[codeforces 1399B] Gifts Fixing 寻找最小值+寻找最大差值
Codeforces Round #661 (Div. 3) 参与排名人数12987[codeforces 1399B] Gifts Fixing 寻找最小值+寻找最大差值总目录详见https://blog.youkuaiyun.com/mrcrack/article/details/103564004在线测评地址https://codeforces.com/contest/1399/problem/BProblem Lang Verdict Time Memory...原创 2020-08-06 20:00:28 · 374 阅读 · 0 评论 -
[codeforces 1399A] Remove Smallest 自小到大排序，若相邻差值大于1,输出NO
Codeforces Round #661 (Div. 3) 参与排名人数12987[codeforces 1399A] Remove Smallest 自小到大排序，若相邻差值大于1,输出NO总目录详见https://blog.youkuaiyun.com/mrcrack/article/details/103564004在线测评地址https://codeforces.com/contest/1399/problem/AProblem Lang Verdict Time...原创 2020-08-06 16:52:09 · 396 阅读 · 0 评论 -
[codeforces 1388C] Uncle Bogdan and Country Happiness 树的遍历+树的子树节点数量的变形
Codeforces Round #660 (Div. 2) 参与排名人数13591总目录详见https://blog.youkuaiyun.com/mrcrack/article/details/103564004在线测评地址https://codeforces.com/contest/1388/problem/C题目大意：原创 2020-08-06 11:26:08 · 319 阅读 · 0 评论 -
[codeforces 1388B] Captain Flint and a Long Voyage 以8结尾,以9开头(简单构造)
Codeforces Round #660 (Div. 2) 参与排名人数13591总目录详见https://blog.youkuaiyun.com/mrcrack/article/details/103564004在线测评地址http://codeforces.com/contest/1388/problem/B题目大意：原创 2020-08-01 17:34:08 · 360 阅读 · 0 评论 -
[codeforces 1388A] Captain Flint and Crew Recruitment 找最小的三个数(每个数都由两个不等的质数相乘)+去重(简单构造)
Codeforces Round #660 (Div. 2) 参与排名人数13591[codeforces 1388A] Captain Flint and Crew Recruitment 找最小的三个数(每个数都由两个不等的质数相乘)+去重(简单构造)总目录详见https://blog.youkuaiyun.com/mrcrack/article/details/103564004在线测评地址http://codeforces.com/contest/1388/problem/AProb...原创 2020-08-01 11:05:37 · 502 阅读 · 0 评论 -
[codeforces 1389A] LCM Problem 寻找l,2*l(简单构造)
Educational Codeforces Round 92 (Rated for Div. 2) 参与排名人数15601[codeforces 1389A] LCM Problem 寻找l,2*l(简单构造)总目录详见https://blog.youkuaiyun.com/mrcrack/article/details/103564004在线测评地址http://codeforces.com/contest/1389/problem/AProblem Lang Verdict...原创 2020-07-30 17:21:19 · 512 阅读 · 1 评论 -
[codeforces 1384C] String Transformation 1 并查集
Codeforces Round #659 (Div. 2) 参与排名人数10822[codeforces 1384C] String Transformation 1 并查集总目录详见https://blog.youkuaiyun.com/mrcrack/article/details/103564004在线测评地址https://codeforces.com/contest/1384/problem/CProblem Lang Verdict Time Memor...原创 2020-07-25 20:35:59 · 413 阅读 · 0 评论 -
[codeforces 1384A] Common Prefixes 上一字串是当前字串的基础(构造)
Codeforces Round #659 (Div. 2) 参与排名人数10822[codeforces 1384A] Common Prefixes 上一字串是当前字串的基础(构造)总目录详见https://blog.youkuaiyun.com/mrcrack/article/details/103564004在线测评地址https://codeforces.com/contest/1384/problem/AProblem Lang Verdict Time ...原创 2020-07-25 09:20:09 · 559 阅读 · 0 评论 -
[codeforces 1382D] Unmerge 寻找连续非递增序列+01背包
Codeforces Round #658 (Div. 2) 参与排名人数14674总目录详见https://blog.youkuaiyun.com/mrcrack/article/details/103564004在线测评地址http://codeforces.com/contest/1382/problem/D题目大意：原创 2020-07-24 14:54:01 · 297 阅读 · 0 评论 -
[codeforces 1382C2] Prefix Flip (Hard Version) 翻转的利器双指针(构造)
Codeforces Round #658 (Div. 2) 参与排名人数14674[codeforces 1382C2] Prefix Flip (Hard Version) 翻转的利器双指针(构造)总目录详见https://blog.youkuaiyun.com/mrcrack/article/details/103564004在线测评地址https://codeforces.com/contest/1382/problem/C2Problem Lang Verdict ...原创 2020-07-23 16:58:07 · 295 阅读 · 1 评论 -
[codeforces 1382C1] Prefix Flip (Easy Version) 翻转的利器双指针(构造)
Codeforces Round #658 (Div. 2) 参与排名人数14674总目录详见https://blog.youkuaiyun.com/mrcrack/article/details/103564004在线测评地址https://codeforces.com/contest/1382/problem/C1样例模拟如下：20110a b位置1 2a 元素0 1b 元素1 0因a[1]==b[2]，需变换a的区间[1,1]a b位置1 2a 元素1 1b...原创 2020-07-23 16:51:09 · 282 阅读 · 0 评论 -
[codeforces 1382B] Sequential Nim 博弈(参赛者面对堆的石块数量大于1时，赢)
Codeforces Round #658 (Div. 2) 参与排名人数14674[codeforces 1382B] Sequential Nim 博弈(参赛者面对堆的石块数量大于1时，赢)总目录详见https://blog.youkuaiyun.com/mrcrack/article/details/103564004在线测评地址https://codeforces.com/contest/1382/problem/BProblem Lang Verdict Time...原创 2020-07-22 10:47:04 · 339 阅读 · 0 评论 -
[codeforces 1382A] Common Subsequence 桶排序
Codeforces Round #658 (Div. 2) 参与排名人数14674[codeforces 1382A] Common Subsequence 桶排序总目录详见https://blog.youkuaiyun.com/mrcrack/article/details/103564004在线测评地址https://codeforces.com/contest/1382/problem/AProblem Lang Verdict Time Memory A...原创 2020-07-22 10:00:33 · 335 阅读 · 0 评论 -
[codeforces 1379B] Dubious Cyrpto 公式推导
Codeforces Round #657 (Div. 2) 参与排名人数8684 错过了难得17:00比赛，可惜总目录详见https://blog.youkuaiyun.com/mrcrack/article/details/103564004在线测评地址https://codeforces.com/contest/1379/problem/B原创 2020-07-21 19:14:25 · 508 阅读 · 1 评论