Compilare: user.cpp: In function ‘bool deja(int, int)’: user.cpp:20:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0; i < inlin[l].size(); i++) ^ user.cpp: In function ‘int main()’: user.cpp:42:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0; i < ls[x].size(); i++){ ^ user.cpp:63:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0; i < ls[x].size(); i++){ ^