Compilare: main.cpp: In function 'int main()': main.cpp:21:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (size_t i = 0; i < m; i++) ~~^~~ main.cpp:32:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (size_t i = 0; i < m; i++) ~~^~~ main.cpp:44:16: warning: 'pos' may be used uninitialized in this function [-Wmaybe-uninitialized] vizitat[pos] = true; ~~~~~~~~~~~~~^~~~~~