Compilare: main.cpp: In function 'int main()': main.cpp:90:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < cb.size() && arbore; ++i){ ~~^~~~~~~~~~~ main.cpp:91:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < cb[i].size() && arbore; ++j){ ~~^~~~~~~~~~~~~~ main.cpp:94:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int k = j + 1; k < cb[i].size() && arbore; ++k){ ~~^~~~~~~~~~~~~~