supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:14:17: error: 'us' was not declared in this scope
14 | if( us[i] ) continue;
| ^~
supertrees.cpp:17:25: error: 'us' was not declared in this scope
17 | if( us[j] ) return 0;
| ^~
supertrees.cpp:18:21: error: 'us' was not declared in this scope
18 | us[j] = 1;
| ^~
supertrees.cpp:23:13: error: could not convert 'ans' from 'vector<vector<long int>>' to 'vector<vector<int>>'
23 | build(ans);
| ^~~
| |
| vector<vector<long int>>