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View Compilation Error

0_0_22311576_7897.cpp:10:9: error: 'maxn' was not declared in this scope
 int son[maxn][26],pre[maxn],step[maxn],last,total,root;//son儿子边是否存在 pre可以理解为parent树上的父节点  step到达i节点走的最长步数
         ^
0_0_22311576_7897.cpp:10:23: error: 'maxn' was not declared in this scope
 int son[maxn][26],pre[maxn],step[maxn],last,total,root;//son儿子边是否存在 pre可以理解为parent树上的父节点  step到达i节点走的最长步数
                       ^
0_0_22311576_7897.cpp:10:34: error: 'maxn' was not declared in this scope
 int son[maxn][26],pre[maxn],step[maxn],last,total,root;//son儿子边是否存在 pre可以理解为parent树上的父节点  step到达i节点走的最长步数
                                  ^
0_0_22311576_7897.cpp: In function 'void push_back(int)':
0_0_22311576_7897.cpp:13:5: error: 'step' was not declared in this scope
     step[++total]=v;
     ^
0_0_22311576_7897.cpp: In function 'void Extend(int)':
0_0_22311576_7897.cpp:17:15: error: 'step' was not declared in this scope
     push_back(step[last]+1);//新建ch的节点
               ^
0_0_22311576_7897.cpp:19:12: error: 'son' was not declared in this scope
     for (;!son[p][ch]; p=pre[p]) son[p][ch]=np;//找到有ch出边的节点
            ^
0_0_22311576_7897.cpp:19:26: error: 'pre' was not declared in this scope
     for (;!son[p][ch]; p=pre[p]) son[p][ch]=np;//找到有ch出边的节点
                          ^
0_0_22311576_7897.cpp:20:13: error: 'pre' was not declared in this scope
     if (!p) pre[np]=root;//如果都没有则指向root
             ^
0_0_22311576_7897.cpp:23:15: error: 'son' was not declared in this scope
         int q=son[p][ch];
               ^
0_0_22311576_7897.cpp:29:13: error: 'pre' was not declared in this scope
             pre[nq]=pre[q];
             ^
0_0_22311576_7897.cpp:33:14: error: 'pre' was not declared in this scope
         else pre[np]=q;
              ^
0_0_22311576_7897.cpp: In function 'void Build(char*)':
0_0_22311576_7897.cpp:40:12: error: 'son' was not declared in this scope
     memset(son,0,sizeof(son));
            ^
0_0_22311576_7897.cpp:41:12: error: 'pre' was not declared in this scope
     memset(pre,0,sizeof(pre));
            ^
0_0_22311576_7897.cpp:42:12: error: 'step' was not declared in this scope
     memset(step,0,sizeof(step));
            ^
0_0_22311576_7897.cpp: In function 'bool sovle(char*, int)':
0_0_22311576_7897.cpp:52:16: error: 'son' was not declared in this scope
             if(son[p][s1[i]-'a'])//p节点有s1[i]的出边
                ^
0_0_22311576_7897.cpp:57:23: error: 'pre' was not declared in this scope
                     p=pre[p];
                       ^
0_0_22311576_7897.cpp:60:25: error: 'step' was not declared in this scope
                     tmp=step[p]+1;
                         ^
0_0_22311576_7897.cpp: At global scope:
0_0_22311576_7897.cpp:71:12: error: 'maxn' was not declared in this scope
 string str[maxn];
            ^
0_0_22311576_7897.cpp: In function 'int main()':
0_0_22311576_7897.cpp:83:18: error: 'str' was not declared in this scope
             cin>>str[i];
                  ^
0_0_22311576_7897.cpp:91:23: error: 'str' was not declared in this scope
         Build((char *)str[ind].c_str());
                       ^


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