Compilare: user.cpp: In function ‘bool deja(int, int)’: user.cpp:21:35: 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:68:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0; i < ls[x].size(); i++){ ^ user.cpp:58:9: warning: unused variable ‘iter’ [-Wunused-variable] int iter = 0; ^