Compilare: main.cpp: In function 'int main()': main.cpp:11:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 1; i < A.size ();){ ~~^~~~~~~~~~~ main.cpp:20:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < B.size ();){ ~~^~~~~~~~~~~ main.cpp:26:11: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (ind == A.size ()){ ~~~~^~~~~~~~~~~~ main.cpp:33:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < v.size(); ++i) ~~^~~~~~~~~~