Compilare: user.cpp: In function ‘void Solve(int)’: user.cpp:38:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < Poz[val].size(); i++) ^ user.cpp:52:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i == Poz[val].size() - 1) ^ user.cpp:59:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < Poz[val].size(); i++) ^