Compilare: user.cpp: In function ‘void parc1(int)’: user.cpp:16:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<a[nod].size();++j) ^ user.cpp: In function ‘int parc2(int, int)’: user.cpp:25:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<a[nod].size();++j){ ^ user.cpp: At global scope: user.cpp:32:6: warning: ISO C++ forbids declaration of ‘main’ with no type [-Wreturn-type] main(){ ^ user.cpp: In function ‘int main()’: user.cpp:91:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<b[j].size();i++)fout<<b[j][i]<<" "; ^