Compilare: main.cpp: In function 'void cit()': main.cpp:20:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0; i<n; i++) ~^~ main.cpp:29:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (i < n-1) drum[i].push_back(0); ~~^~~~~ main.cpp: In function 'void afis()': main.cpp:37:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0; i < n; ++i) ~~^~~ main.cpp:47:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0; i < n; ++i) ~~^~~ main.cpp: In function 'void caut(unsigned int)': main.cpp:83:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (i <= n - 2) ~~^~~~~~~~