Compilare: user.cpp: In function ‘char find_max(int)’: user.cpp:39:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<v[nod].size();++j) ^ user.cpp: In function ‘void pushcd(int)’: user.cpp:65:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<v[nod].size();++j) ^ user.cpp:84:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<v[nod].size();++j) ^ user.cpp:86:45: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(sz < sol[vecin].size()) sz = sol[vecin].size(); ^ user.cpp:91:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<v[nod].size();++j) ^ user.cpp:92:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(sol[vecin].size() == sz) ^ user.cpp:100:51: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int q=0;q<ult[vecin].size();++q) ^ user.cpp: In function ‘int main()’: user.cpp:155:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=1;i<=n;++i) if(sol[i].size() > sz) ^