Compilare: user.cpp: In function ‘void dfs(int)’: user.cpp:20:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<to[x].size();i++) ^ user.cpp: In function ‘void ctc(int)’: user.cpp:34:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<reversed[x].size();i++) ^ user.cpp: In function ‘int main()’: user.cpp:83:49: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<component[indici[i].poz].size();j++) g<<component[indici[i].poz][j]<<' '; ^