Compilare: user.cpp: In function ‘void dfs(int)’: user.cpp:15:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<Lista[nc].size();i++){ ^ user.cpp: In function ‘void afisare(int)’: user.cpp:34:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0,pl=0;i<Lista[nc].size();i++){ ^ user.cpp: In function ‘int main()’: user.cpp:93:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(r=0;r<Lista[i].size();i++) ^ user.cpp:96:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(r=0;r<Lista[i].size();r++) ^