Compilare: main.cpp: In function 'int main()': main.cpp:19:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (size_t i = 1; i <= count2; i++) ~~^~~~~~~~~ main.cpp:25:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (size_t i = 1; i <= count2; i++) ~~^~~~~~~~~ main.cpp:27:9: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (i < l) ~~^~~ main.cpp:33:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (!coada.empty() && coada.back() == i - u - 1) ~~~~~~~~~~~~~^~~~~~~~~~~~