View Compilation Error

0_0_8749862_7798.cpp: In function `int main()':
0_0_8749862_7798.cpp:7: error: `class std::map<int, int, std::less<int>, std::allocator<std::pair<const int, int> > >::_Imp' has not been declared
0_0_8749862_7798.cpp:7: error: `_node' undeclared (first use this function)
0_0_8749862_7798.cpp:7: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_8749862_7798.cpp:7: error: expected `;' before "node"