4.10b

.clang-format

@@ -166,7 +166,7 @@ SpacesInParentheses:	false
 # 在方括号的[后和]前添加空格，lamda表达式和未指明大小的数组的声明不受影响
 SpacesInSquareBrackets:	false
 # 标准: Cpp03, Cpp11, Auto
-Standard:	Cpp03
+Standard:	Cpp11
 # tab宽度
 TabWidth:	4
 # 使用tab字符: Never, ForIndentation, ForContinuationAndIndentation, Always

Checker/Adapters/BZOJJudger.cpp

@@ -8,8 +8,9 @@ static bool readOpt(Option& opt,
                     const std::string& str) {
     std::string title;
     {
-        std::regex pattern("<title>(\\S+)</title>",
-                           regexFlag4Search);
+        std::regex pattern(
+            "<title>\\s*([ \\S]+)\\s*</title>",
+            regexFlag4Search);
         std::smatch match;
         std::regex_search(str, match, pattern);
         if(match.size() == 2)
@@ -20,7 +21,7 @@ static bool readOpt(Option& opt,
     int64_t maxTime = 0;
     {
         std::regex pattern(
-            "[：|</span>]([0-9]+)[s|Sec]",
+            "[：|</span>]([0-9]+)[s| ?Sec]",
             regexFlag4Search);
         std::smatch match;
         std::regex_search(str, match, pattern);
@@ -31,7 +32,7 @@ static bool readOpt(Option& opt,
     }
     int64_t maxMem = 0;
     {
-        std::regex pattern("([0-9]+)MB",
+        std::regex pattern("([0-9]+) ?MB",
                            regexFlag4Search);
         std::smatch match;
         std::regex_search(str, match, pattern);

Checker/Adapters/LOJJudger.cpp

@@ -10,9 +10,9 @@ static bool readOpt(Option& opt,
                     const std::string& str) {
     std::string title;
     {
-        std::regex pattern(
-            "<h1class=\"uiheader\">(\\S+)</h1>",
-            regexFlag4Search);
+        std::regex pattern("<h1class=\"uiheader\">\\s*"
+                           "([ \\S]+)\\s*</h1>",
+                           regexFlag4Search);
         std::smatch match;
         std::regex_search(str, match, pattern);
         if(match.size() == 2)
@@ -22,7 +22,7 @@ static bool readOpt(Option& opt,
     }
     int64_t maxTime = 0;
     {
-        std::regex pattern("([0-9]+)ms</span>",
+        std::regex pattern("([0-9]+) ms</span>",
                            regexFlag4Search);
         std::smatch match;
         std::regex_search(str, match, pattern);
@@ -33,7 +33,7 @@ static bool readOpt(Option& opt,
     }
     int64_t maxMem = 0;
     {
-        std::regex pattern("([0-9]+)MiB</span>",
+        std::regex pattern("([0-9]+) MiB</span>",
                            regexFlag4Search);
         std::smatch match;
         std::regex_search(str, match, pattern);

Checker/Checker.cpp

@@ -8,7 +8,7 @@ int main() {
     std::cout.precision(2);
     std::cout << std::fixed;
 
-    line("Checker 2.8.0", '*');
+    line("Checker 2.8.1", '*');
     std::cout << "Built at " << __TIME__ << " on "
               << __DATE__ << std::endl;
     platformInfo();

Checker/Common.cpp

@@ -5,6 +5,7 @@
 #include <fstream>
 #include <iostream>
 #include <iterator>
+#include <random>
 #ifdef __WIN32
 #include <windows.h>
 #else
@@ -16,8 +17,12 @@
 #include <vector>
 std::string file2Str(const fs::path& path) {
     std::ifstream in(path);
-    using Iter = std::istream_iterator<char>;
-    return { Iter(in), Iter() };
+    in.seekg(0, std::ios::end);
+    auto siz = in.tellg();
+    in.seekg(0, std::ios::beg);
+    std::vector<char> data(siz);
+    in.read(data.data(), siz);
+    return std::string(data.data(), data.data() + siz);
 }
 static int getConsoleWidth() {
 #ifdef __WIN32
@@ -56,21 +61,22 @@ bool Data::operator<(const Data& rhs) const {
     return input < rhs.input;
 }
 static fs::path uniqueTempFileName() {
-    std::string temp =
-        (fs::temp_directory_path() / "TMP_XXXXXX")
-            .string();
-    if(mkstemp(temp.data()) == -1)
-        throw std::runtime_error(
-            "Failed to create temp file.");
-    return temp;
+    static std::mt19937_64 dev(
+        std::chrono::high_resolution_clock::now()
+            .time_since_epoch()
+            .count());
+    return fs::temp_directory_path() /
+        std::to_string(dev());
 }
 TempFile::TempFile() : mFile(uniqueTempFileName()) {}
 fs::path TempFile::path() const {
     return mFile;
 }
 TempFile::~TempFile() {
-    if(fs::exists(mFile))
+    try {
         fs::remove(mFile);
+    } catch(...) {
+    }
 }
 static void clearCache() {
     if(fs::exists("Cache")) {

Checker/Platforms/PlatformWindows.cpp

@@ -12,8 +12,8 @@ Win32APIError::Win32APIError(const SourceLocation& loc)
 const char* Win32APIError::name() const noexcept {
     return "Win32API";
 }
-std::string
-Win32APIError::message(int cond) const noexcept {
+std::string Win32APIError::message(int cond) const
+    noexcept {
     return "\033[35mSystem Error:\nError Code: " +
         std::to_string(cond) + "\nError Message: " +
         winerr2String(cond) + "\nFunction: " +
@@ -43,6 +43,10 @@ void winAssert(WINBOOL res,
     if(res == FALSE)
         reportError(loc);
 }
+void setCodePage(int codePage) {
+    winAssert(SetConsoleCP(codePage));
+    winAssert(SetConsoleOutputCP(codePage));
+}
 void initPlatform() {
     HANDLE ohnd = GetStdHandle(STD_OUTPUT_HANDLE);
     if(ohnd == INVALID_HANDLE_VALUE)
@@ -52,7 +56,7 @@ void initPlatform() {
     winAssert(SetConsoleMode(
         ohnd,
         old | ENABLE_VIRTUAL_TERMINAL_PROCESSING));
-    winAssert(SetConsoleCP(65001));
+    setCodePage(65001);
 }
 void platformInfo() {
     system("ver");

Checker/Platforms/PlatformWindows.hpp

@@ -10,8 +10,8 @@ class Win32APIError final
 public:
     Win32APIError(const SourceLocation& loc);
     const char* name() const noexcept override;
-    std::string
-    message(int cond) const noexcept override;
+    std::string message(int cond) const
+        noexcept override;
     ~Win32APIError() override = default;
 };
 [[noreturn]] void
@@ -31,3 +31,4 @@ class Handle final : private Unmovable {
 void winAssert(WINBOOL res,
                const SourceLocation& loc =
                    SourceLocation::current());
+void setCodePage(int codePage);

Checker/RunnerWindows.cpp

@@ -69,7 +69,7 @@ static RunResult runImpl(const Option& opt,
         NULL);
     Handle ohnd = CreateFileW(
         out.c_str(), GENERIC_WRITE, 0, NULL,
-        CREATE_ALWAYS, FILE_ATTRIBUTE_TEMPORARY, NULL);
+        CREATE_NEW, FILE_ATTRIBUTE_TEMPORARY, NULL);
     std::pair<HANDLE, HANDLE> phnd =
         launch(opt, ihnd, ohnd);
     Handle process(phnd.first);
@@ -131,7 +131,9 @@ RunResult run(const Option& opt, const Timer& timer,
     try {
         return runImpl(opt, timer, in, out);
     } catch(const std::system_error& err) {
+        setCodePage(936);
         std::cout << err.what() << std::endl;
+        setCodePage(65001);
         RunResult res;
         res.st = Status::SE;
         return res;

Checker/build.bat

@@ -2,4 +2,4 @@ g++ Common.cpp  Judger.cpp OJAdapter.cpp OJAPI.cpp Timer.cpp ^
 PerfAnalyzer.cpp RunnerShared.cpp Scanner.cpp Checker.cpp ^
 RunnerWindows.cpp Platforms/PlatformWindows.cpp Adapters/BZOJJudger.cpp ^
 Adapters/LOJJudger.cpp Adapters/DefaultJudger.cpp ^
--o ../bin/checker.out -O2 -std=c++17 -lstdc++fs -Wall -Wextra -v -D__WIN32
+-o ../bin/checker.out -O2 -std=c++17 -lstdc++fs -Wall -Wextra -D__WIN32 -DUNICODE -D_UNICODE 

Checker/build.sh

@@ -3,4 +3,4 @@ g++ Common.cpp  Judger.cpp OJAdapter.cpp OJAPI.cpp Timer.cpp \
 PerfAnalyzer.cpp RunnerShared.cpp Scanner.cpp Checker.cpp RunnerLinux.cpp \
 Adapters/BZOJJudger.cpp Adapters/LOJJudger.cpp Adapters/DefaultJudger.cpp \
 Platforms/PlatformLinux.cpp \
--o ../bin/checker.out -O2 -std=c++17 -lstdc++fs -Wall -Wextra -time
+-o ../bin/checker.out -O2 -std=c++17 -lstdc++fs -Wall -Wextra

Checker/readme.md

@@ -116,6 +116,9 @@ AC后询问OJ上的时间并加入samples中，在BZOJ计时方式下skip掉剩
 2.8.0(4.9)
 初步跨Windows平台，并且将评测有关文件移至临时文件夹
 
+2.8.1(4.10)
+解决Windows平台下控制台输出乱码问题
+
 ## TODO List
 
 - [x] 跨Windows平台、分离平台实现

Queue.md

@@ -435,8 +435,8 @@
 - [ ] bzoj3501
 - [ ] bzoj1902
 - [ ] bzoj2111
-- [ ] bzoj4454
-- [ ] BZOJ3884
+- [x] bzoj4454
+- [x] BZOJ3884
 # 线段树相关
 - [x] LOJ#2013. 「SCOI2016」幸运数字
 - [x] LOJ#6057. 「HNOI2016」序列 数据加强版

Review/NumberTheory/GCD.tex

@@ -140,3 +140,34 @@ \subsubsection{实现}
     return a|b;
 }
 \end{lstlisting}
+\subsection{O(n)-O(1)gcd}
+例题：BZOJ4454 C Language Practice
+
+该算法依赖于这个定理：
+\begin{theorem}
+	任意正整数$x$都可以分解为$x_1x_2x_3$的形式，其中$x_i$要么$\leq\sqrt{x}$，要么是素数。
+\end{theorem}
+
+在计算$gcd(x,y)$时，如果我们知道了$x$的分解$x_1x_2x_3$，那么答案可以表示为
+$gcd(x_1,y)gcd(x_2,y')gcd(x_3,y'')$，其中$y'$为$y$消去因子$gcd(x_1,y)$后的值，$y''$类似。
+
+接下来分类讨论计算（记$n=max\left\{x\right\}$）：
+\begin{itemize}
+	\item 若$x_i\leq \sqrt{n}$，那么可以$O(n)$预处理$1\sim \sqrt{n}$两两之间的gcd
+	（利用$gcd(x,y)=gcd(x-y,y)$递推）,然后$O(1)$查询$gcd(x_i,y\%x_i)$。
+	\item 否则$x_i$是素数，判断$x_i$是否整除$y$。
+\end{itemize}
+
+至于计算$x$的因式分解，可以使用线性筛筛出最小质因子$d$，然后使用$x/d$的因子分解递推出
+$x$的分解，选取最小的因子乘以$d$。
+
+参考代码：
+\lstinputlisting{Source/Source/'Number Theory'/bzoj4454.cpp}
+
+该方法参考了wzj\footnote{
+	BZOJ4454: C Language Practice
+	\url{https://www.cnblogs.com/wzj-is-a-juruo/p/5316963.html}
+}和fjzzq2002\footnote{
+	O(1) 查询gcd
+	\url{https://www.cnblogs.com/zzqsblog/p/5436775.html}
+}的博客。

Source/Number Theory/bzoj3884.cpp

@@ -0,0 +1,40 @@
+#include <cstdio>
+int phi(int n) {
+    int res = n;
+    for(int i = 2; i * i <= n; ++i)
+        if(n % i == 0) {
+            do
+                n /= i;
+            while(n % i == 0);
+            res = res / i * (i - 1);
+        }
+    if(n != 1)
+        res = res / n * (n - 1);
+    return res;
+}
+typedef long long Int64;
+Int64 powm(Int64 a, int k, int mod) {
+    Int64 res = 1;
+    while(k) {
+        if(k & 1)
+            res = res * a % mod;
+        k >>= 1, a = a * a % mod;
+    }
+    return res;
+}
+int foo(int t) {
+    if(t == 1)
+        return 0;
+    int x = phi(t);
+    return powm(2, foo(x) + x, t);
+}
+int main() {
+    int t;
+    scanf("%d", &t);
+    for(int i = 1; i <= t; ++i) {
+        int x;
+        scanf("%d", &x);
+        printf("%d\n", foo(x));
+    }
+    return 0;
+}