Compilare: user.cpp: In function ‘int main()’: user.cpp:64:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int pos = 0; pos <= State[i].size(); ++pos) { ^ user.cpp:65:65: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if ((pos == 0 || State[i][pos - 1]) && (pos == State[i].size() || State[i][pos])) { ^ user.cpp:70:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = pos; j < State[i].size(); ++j) ^ user.cpp:72:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < AUX.size(); ++j) ^ user.cpp:91:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (State[i].size() == k) ^