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RSS订阅原创 操作系统实验 FCFS（先来先服务），HRRN（高响应比）
可能有错误或伪算法#include <iostream>#include <string>#include <algorithm>#include <cstdio>#include <cstring>#include <cstdlib>#include <windows.h>#include <ctime>#include <random>#define out(x) cout
2020-12-13 22:00:09
273
原创 操作系统实验 多级反馈队列，时间片轮转，动态优先数
可能有错误或伪算法。#include <iostream>#include <string>#include <algorithm>#include <cstdio>#include <cstring>#include <cstdlib>#include <windows.h>#include <ctime>#include <random>#define out(x) cout
2020-12-13 21:55:24
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原创 2015 PWTC D5 D（简单推导）
2015 PWTC D5 D1≤n≤10181\le n\le 10^{18}1≤n≤1018，现有面值 1,5,10,251,5,10,251,5,10,25 的硬币，求有多少种不同的取法使得硬币的面值和正好为 nnn ？答案对 109+710^9+7109+7 取模。思路及解法考虑 111 是所有其他硬币的公因数，可以先把 111 填充 nnn 个，然后用其他面值的硬币替代 111 。那么用 (i,j,k)(i,j,k)(i,j,k) 枚举 25,10,525,10,525,10,5 的个数，
2020-11-28 21:32:19
151
原创 2020GDUTACMA10月月赛 H.一道难题（计数DP）
H.一道难题Time Limit: 1 SecMemory Limit: 128 MBDescription有一个长度为n的序列，特征为m，满足a[i]=a[i-m] (i>m)，a[i]=i (i<=m)。即1,2,…,m[i]-1 ,m[i],1,2,…,m[i]-1,m[i],…(n-i) mod (m[i]+1)例如 n=7,m=3时，序列如下：1 ,2, 3, 1, 2, 3, 1现可删除若干元素（也可以不删，也可以全删），问会出现多少不同的序列？ 序列不同当且仅当长
2020-10-19 01:14:25
172
原创 UDP通信程序设计(学习记录)
因为作为新手还是不太清楚，稍稍记录一下遇到的情况。我使用的是Windows平台。首先需要编写udp的通信程序，就要了解其需要用到什么函数。一般来说，在Windows上用winsock编写udp程序需要使用winsock2.h来创建套接字，并实现收发等功能。然而一开始发现编译并不能通过，发现是没在链接器里加上-lws2_32的语句。加上，这样就可以链接ws2_32.lib库了。但在创建套接...
2019-03-27 01:23:16
1094
原创 codeforces C. Mashmokh and Numbers (细心？)
C. Mashmokh and Numberstime limit per test:1 secondmemory limit per test:256 megabytesinput:standard inputoutput:standard outputIt’s holiday. Mashmokh and his boss, Bimokh, are playing a game inv...
2019-03-20 01:03:51
211
原创 广东工业大学第十四届程序设计竞赛 简单数学题(简单数学题)
简单数学题Time Limit: 4000/2000 MS (Java/Others)Memory Limit: 65536/65536 K (Java/Others)Problem Description已知F(n)=∑ni=1(i×∑nj=iCij)求 F(n) mod 1000000007Input多组输入，每组输入占一行，包含一个整数n（1 &lt;= n &lt;= 1e...
2019-03-17 13:46:50
589
原创 codeforces C. Unusual Product(数学？)
C. Unusual Producttime limit per test:1 secondmemory limit per test:256 megabytesinput:standard inputoutput:standard outputLittle Chris is a huge fan of linear algebra. This time he has been give...
2019-03-17 09:20:00
171
原创 codeforces D. Lemonade Line(水)
D. Lemonade Linetime limit per test:1 secondmemory limit per test:256 megabytesinput:standard inputoutput:standard outputIt’s a hot summer day out on the farm, and Farmer John is serving lemonade...
2019-03-15 13:55:11
169
原创 codeforces A. Out of Sorts(树状数组)
A. Out of Sortstime limit per test:1 secondmemory limit per test:256 megabytesinput:standard inputoutput:standard outputKeeping an eye on long term career possibilities beyond the farm, Bessie th...
2019-03-15 13:36:34
253
原创 codeforces H. Triangle(思考题？)
H. Triangletime limit per test:1 secondmemory limit per test:256 megabytesinput:standard inputoutput:standard outputThere is a right triangle with legs of length a and b. Your task is to determin...
2019-03-15 00:53:06
256
原创 codeforces E. Family Tree(LCA)
E. Family Treetime limit per test:1 secondmemory limit per test:256 megabytesinput:standard inputoutput:standard outputFarmer John owns a family-run farm that has been passed down over several ge...
2019-03-15 00:06:22
155
原创 codeforces G. Snow Boots(动态规划)
G. Snow Bootstime limit per test:1 secondmemory limit per test:256 megabytesinput:standard inputoutput:standard outputIt’s winter on the farm, and that means snow! There are N tiles on the path f...
2019-03-14 12:13:33
201
原创 codeforces C. Rest Stops(贪心)
C. Rest Stopstime limit per test:1 secondmemory limit per test:256 megabytesinput:standard inputoutput:standard outputFarmer John and his personal trainer Bessie are hiking up Mount Vancowver. Fo...
2019-03-14 10:30:14
192
原创 codeforces B. Hoofball
B. Hoofballtime limit per test:5 secondsmemory limit per test:512 megabytesinput:standard inputoutput:standard outputIn preparation for the upcoming hoofball tournament, Farmer John is drilling h...
2019-03-14 09:52:40
183
原创 codeforces A. Taming the Herd(水)
A. Taming the Herdtime limit per test:1 secondmemory limit per test:256 megabytesinput:standard inputoutput:standard outputEarly in the morning, Farmer John woke up to the sound of splintering wo...
2019-03-14 09:27:21
239
原创 codeforces F. Teleportation(水)
F. Teleportationtime limit per test:15 secondsmemory limit per test:1024 megabytesinput:standard inputoutput:standard outputOne of the farming chores Farmer John dislikes the most is hauling arou...
2019-03-14 02:43:51
159
原创 codeforces E. Convention(二分)
E. Conventiontime limit per test:1 secondmemory limit per test:256 megabytesinput:standard inputoutput:standard outputCows from all over the world are arriving at the local airport to attend the ...
2019-03-14 02:31:42
126
原创 codeforces G. Back and Forth（暴力）
G. Back and Forthtime limit per test:1 secondmemory limit per test:256 megabytesinput:standard inputoutput:standard outputFarmer John has two milking barns, each of which has a large milk tank as...
2019-03-14 02:15:30
205
原创 codeforces H. Mixing Milk
H. Mixing Milktime limit per test:1 secondmemory limit per test:256 megabytesinput:standard inputoutput:standard outputFarming is competitive business – particularly milk production. Farmer John ...
2019-03-14 01:55:26
170
原创 codeforces A. The Bucket List(水)
A. The Bucket Listtime limit per test:1 secondmemory limit per test:256 megabytesinput:standard inputoutput:standard outputFarmer John is considering a change in how he allocates buckets for milk...
2019-03-14 01:43:50
163
原创 codeforces C. Mooyo Mooyo(dfs)
C. Mooyo Mooyotime limit per test:1 secondmemory limit per test:256 megabytesinput:standard inputoutput:standard outputWith plenty of free time on their hands (or rather, hooves), the cows on Far...
2019-03-14 01:16:12
127
原创 codeforces A. Inna and Choose Options
A. Inna and Choose Optionstime limit per test1: secondmemory limit per test:256 megabytesinput:standard inputoutput:standard outputThere always is something to choose from! And now, instead of “N...
2019-03-07 10:51:36
723
原创 codeforces C. Inna and Huge Candy Matrix(模拟)
C. Inna and Huge Candy Matrixtime limit per test：2 secondsmemory limit per test：256 megabytesinput：standard inputoutput：standard outputInna and Dima decided to surprise Sereja. They brought a rea...
2019-03-07 10:17:16
193
原创 codeforces:Team Tic Tac Toe
C. Team Tic Tac Toetime limit per test:1 secondmemory limit per test:256 megabytesinput:standard inputoutput:standard outputFarmer John owns 26 cows, which by happenstance all have names starting...
2019-02-28 14:09:58
198
原创 Out of Sorts II(树状数组)
F. Out of Sorts IItime limit per test:1 secondmemory limit per test:256 megabytesinput:standard inputoutput:standard outputKeeping an eye on long term career possibilities beyond the farm, Bessie...
2019-02-28 13:30:02
178
原创 Codeforces Gym - 101755H Save Path (BFS)
H. Safe Pathtime limit per test:2.0 smemory limit per test:256 MBinput:standard inputoutput:standard outputYou play a new RPG. The world map in it is represented by a grid of n × m cell...
2019-01-29 00:10:49
395
原创 Codeforces 897C Nephren gives a riddle（DFS）
Codeforces:Nephren gives a riddletime limit per test: 2 secondsmemory limit per test: 256 megabytesinput: standard inputoutput: standard output–What are you doing at the end of the worl...
2019-01-26 22:37:55
352
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