Compilare: main.cpp: In function 'int main()': main.cpp:82:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 82 | for (int i = 0; i < bcc.size(); ++i) { | ~~^~~~~~~~~~~~ main.cpp:83:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 83 | for (int j = 0; j < bcc[i].size(); ++j) { | ~~^~~~~~~~~~~~~~~ main.cpp:84:41: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 84 | cout << bcc[i][j] << (j + 1 == bcc[i].size() ? "" : " "); | ~~~~~~^~~~~~~~~~~~~~~~