Compilare: main.cpp: In function 'int main()': main.cpp:18:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < B.size(); i++) { ~~^~~~~~~~~~ main.cpp:24:10: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (j == A.size() - 1 && A[j] == B[i]) { ~~^~~~~~~~~~~~~~~ main.cpp:32:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < ind.size(); i++) { ~~^~~~~~~~~~~~