Paul hates palindromes. He assumes that string
s is tolerable if each its character is one of the first
p letters of the English alphabet and
s doesn't contain any palindrome contiguous substring ...
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其他好文 时间：
2014-09-17 18:47:02
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247
C - Number of Ways
直接暴力从前往后寻找，如果找到1/3sum的位置，那么标记++。找到2/3的位置,总数加上标记数。
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#pragma comment(linker, "/STACK:1024000...
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其他好文 时间：
2014-09-17 16:57:02
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282
select?t.recd_id
??from?(select?recd_id,?ROWNUM?RN?from?RT_TICKETS_BIS_RECD)?t
?where?t.RN?=?(select?round(DBMS_RANDOM.VALUE(1,?count(1)))
?????????????????from?R...
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数据库 时间：
2014-09-17 15:41:22
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322
Over time, Alexey's mail box got littered with too many letters. Some of them are read, while others are unread.
Alexey's mail program can either show a list of all letters or show the content of a s...
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其他好文 时间：
2014-09-17 15:16:42
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248
DZY has a sequence a, consisting of
n integers.
We'll call a sequence ai,?ai?+?1,?...,?aj
(1?≤?i?≤?j?≤?n) a subsegment of the sequence
a. The value (j?-?i?+?1) denotes the length of the subsegmen...
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其他好文 时间：
2014-09-16 15:57:40
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248
Peter has a sequence of integers a1,?a2,?...,?an. Peter wants all numbers in the sequence to equal
h. He can perform the operation of "adding one on the segment
[l,?r]": add one to all elements of t...
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其他好文 时间：
2014-09-16 14:18:20
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259
You've got array a[1],?a[2],?...,?a[n], consisting of
n integers. Count the number of ways to split all the elements of the array into three contiguous parts so that the sum of elements in each part ...
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其他好文 时间：
2014-09-16 12:45:20
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164
A：题意密码由n不同的字符和m的长度组成，问你有多少种情况解题思路：可以得到状态转移方程为 dp[i][j] = dp[i-1][j]*j + dp[i-1][j-1]*(n-j+1);解题代码： 1 // File Name: a.cpp 2 // Author: darkdream 3 // C...
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其他好文 时间：
2014-09-15 17:21:49
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189
The start of the new academic year brought about the problem of accommodation students into dormitories. One of such dormitories has a
a?×?b square meter wonder room. The caretaker wants to accommoda...
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其他好文 时间：
2014-09-15 11:18:28
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148
Ann has recently started commuting by subway. We know that a one ride subway ticket costs
a rubles. Besides, Ann found out that she can buy a special ticket for
m rides (she can buy it several times...
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其他好文 时间：
2014-09-15 10:05:28
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320
