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View Compilation Error

0_0_27196120_12164.cpp:17:7: error: expected nested-name-specifier before 'namenode'
 using namenode std;
       ^
0_0_27196120_12164.cpp: In function 'void bfs()':
0_0_27196120_12164.cpp:46:2: error: 'queue' was not declared in this scope
  queue<node>q;
  ^
0_0_27196120_12164.cpp:46:2: note: suggested alternative:
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/queue:64:0,
                 from 0_0_27196120_12164.cpp:11:
GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_queue.h:96:11: note:   'std::queue'
     class queue
           ^
0_0_27196120_12164.cpp:46:12: error: expected primary-expression before '>' token
  queue<node>q;
            ^
0_0_27196120_12164.cpp:46:13: error: 'q' was not declared in this scope
  queue<node>q;
             ^
0_0_27196120_12164.cpp: In function 'int main()':
0_0_27196120_12164.cpp:98:21: error: 'cin' was not declared in this scope
                     cin>>maps[i][j][k];
                     ^
0_0_27196120_12164.cpp:98:21: note: suggested alternative:
In file included from 0_0_27196120_12164.cpp:4:0:
GCC4.9.2/x86_64-w64-mingw32/include/c++/iostream:60:18: note:   'std::cin'
   extern istream cin;  /// Linked to standard input
                  ^


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