Eroare de compilare: main.cpp: In function 'std::vector<int> bfs(int)': main.cpp:26:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 26 | for (int i=0; i<arr[x].size(); i++) | ~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:59:48: error: 'cf' was not declared in this scope 59 | if (arx[i]+ary[i]==nr&&cnt[arx[i]]==1) cf++; | ^~ main.cpp:61:11: error: 'cf' was not declared in this scope 61 | cout<<cf<<"\n"; | ^~ Non zero exit status: 1