dna.cpp:3:1: error: 'vector' does not name a type
3 | vector<bool> va, vb;
| ^~~~~~
dna.cpp: In function 'void init(std::string, std::string)':
dna.cpp:6:9: error: 'va' was not declared in this scope; did you mean 'a'?
6 | va.resize(a.size());
| ^~
| a
dna.cpp:12:9: error: 'vb' was not declared in this scope; did you mean 'b'?
12 | vb.resize(b.size());
| ^~
| b
dna.cpp: In function 'int get_distance(int, int)':
dna.cpp:24:21: error: 'va' was not declared in this scope
24 | if (va[i] != vb[i]) diff++;
| ^~
dna.cpp:24:30: error: 'vb' was not declared in this scope
24 | if (va[i] != vb[i]) diff++;
| ^~