View Compilation Error

391862_0_0_23923.cpp:10:20: hash_map: No such file or directory
391862_0_0_23923.cpp: In function `int main()':
391862_0_0_23923.cpp:33: error: `hash_map' undeclared (first use this function)
391862_0_0_23923.cpp:33: error: (Each undeclared identifier is reported only once for each function it appears in.)
391862_0_0_23923.cpp:33: error: expected primary-expression before "int"
391862_0_0_23923.cpp:33: error: expected `;' before "int"
391862_0_0_23923.cpp:41: error: `m' undeclared (first use this function)