Compilare: main.cpp: In function 'int main()': main.cpp:78:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 78 | for (int i = 0; i < compBic.size(); ++i) | ~~^~~~~~~~~~~~~~~~ main.cpp:80:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 80 | for(int j = 0; j < compBic[i].size(); ++j) | ~~^~~~~~~~~~~~~~~~~~~