Compilare: user.cpp: In function ‘void filll(int)’: user.cpp:55:44: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < drumuri[n].size(); ++i){ ^ user.cpp: In function ‘int main()’: user.cpp:83:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < types[i].size(); ++j){ ^ user.cpp:94:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < types[i].size(); ++j){ ^