subsecvente.cpp: In function 'bool CHECK(int)': subsecvente.cpp:17: error: 'unordered_map' was not declared in this scope subsecvente.cpp:17: error: expected primary-expression before 'long' subsecvente.cpp:17: error: expected ';' before 'long' subsecvente.cpp:31: error: 'M' was not declared in this scope subsecvente.cpp:33: error: 'M' was not declared in this scope