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View Compilation Error

0_0_33663814_26750.cpp:7:21: error: expected ']' before ',' token
 int son[M][30],cur[M,mark[M],las[M];
                     ^
0_0_33663814_26750.cpp: In function 'void add(int)':
0_0_33663814_26750.cpp:31:6: error: 'cur' was not declared in this scope
   if(cur[pre]==0)cur[pre]=++cnt;
      ^
0_0_33663814_26750.cpp:32:11: error: 'cur' was not declared in this scope
   mark[i]=cur[pre];
           ^
0_0_33663814_26750.cpp: In function 'int main()':
0_0_33663814_26750.cpp:45:10: error: 'cur' was not declared in this scope
   memset(cur,0,sizeof(cur));
          ^


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