0_0_38330070_19479.cpp:30:6: error: 'unordered_map' in namespace 'std' does not name a template type
std::unordered_map<ull,bool> exist;
^
0_0_38330070_19479.cpp: In function 'int main()':
0_0_38330070_19479.cpp:86:3: error: 'exist' was not declared in this scope
exist.clear();
^
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